Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7d6223d2ff3314…

MALICIOUS

PDF

101.3 KB Created: 2021-06-25 22:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 938aa27093aa5cf7b542ca82f8c8f81a SHA-1: 0386b60ab2a4f6d08d18d0d013c042e2f441e39a SHA-256: fc7d6223d2ff3314f60d31a65873ea08b3c1dbc72fa224a24851b2204c063bd2
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains a link farm pointing to various domains, some of which are hosted on compromised CMS uploads, suggesting an attempt to distribute malicious content or phish users. The presence of a callback lure heuristic indicates the document likely prompts the user to call a phone number for a fraudulent purpose, such as a fake tech support scam or billing dispute. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9803

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607decea45ef6---dujerakidafun.pdf In PDF document text
    • http://hnkingdee.cn/Files/file/20216741727.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c85b0ba61a3---nitajilelibugirukotopo.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/bgs1i404bg2uqc9jlk0dpl2bnn/teronojukelamavoterusi.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/kakitedodazig.pdfIn PDF document text
    • https://synersys.fr/contenu/file/rugevu.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9184051ce---81551545168.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/69029865449.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16082f3f3c7900---puzodu.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/69128229398.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/85b25hq4jdkhcjps317s3brk61/70549201154.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608849b855d82---navabonaxezafefeto.pdfIn PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16085838e5bbf1---nopapivelusosuxasudakaw.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/of8iq3u0jeuc36itcbv3gm1305/53008899172.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a83e82ef13d---bobukegididopoje.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076a1fa74e3d---vatodivine.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee694e080a---61669993235.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160718e4f3a368---gapaxuwunexol.pdfIn PDF document text
    • http://studiogaleazzo.eu/userfiles/files/43971970523.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/xerakurovoko.pdfIn PDF document text
    • http://asupuro.com/user_data/image//file/58864209414.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/cb2f930d29dcb1b57d32a14764bbd49b/lipuz.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/2dv0hh5fir3do672d7j84eqio7/73965263111.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/de3ec8d086be6226a84d3207b696dd0f/20329098631.pdfIn PDF document text
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/6823bde09d823d2c41bec2a7e434e0f1/27302109544.pdfIn PDF document text
    • https://jamurgoreng.net/contents//files/67330883177.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=chat+issue+31+answersPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001238b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1238B 10480 bytes
SHA-256: dd66ed04a2e2bc17ff8d8d23540faf6db2ebb9213585bf2e95f86dceea62190b
font_01_sfnt_off00013b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B76 20836 bytes
SHA-256: 92011f4045beafab3ed7bc07d4d1035f4f87391aaf8816247005a02fbf84317c
font_02_sfnt_off00016fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FEC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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