Malicious PDF — malware analysis report

Static analysis result for SHA-256 001be178d42b47aa…

MALICIOUS

PDF

87.8 KB Created: 2021-07-14 05:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 750c8d87625784bcf8ddd6d5d2b37b5f SHA-1: 1b2d60a588ab92a1cfd487742002d211f3183a88 SHA-256: 001be178d42b47aa3d8950d5119420f707c6dca61ab44a98911e4dd2d1e61b1d
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with several URLs pointing to compromised WordPress upload directories. The document's structure and heuristic firings suggest a callback phishing attempt, aiming to trick users into calling a fraudulent number.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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) 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 https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/chinh4vmpv6ihcsa4jnbfjru22/ladizokejodejonarepudewe.pdf In PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/f4afa1fb9bd406f9cd0b692f30ca7827/lidivugosixitezuj.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080355025ff7---69519430335.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca83933e03---jepikipijesexataji.pdfIn PDF document text
    • https://mumegram.com/userfiles/file/81011565228.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbb4f297f81---ganoturelegoxajedasow.pdfIn PDF document text
    • https://talleresimad.com/images/subidas/files/rusazalozobizevusadudij.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/47474493698.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6bb3b1c1b---zawufun.pdfIn PDF document text
    • https://living-stone.lu/userfiles/files/zuwijuzupolazod.pdfIn PDF document text
    • http://iccj.jp/images/uploads/fckeditor/file/1419201584.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/2f9ogbi6uakvkb2opds3hotv1r/99498745502.pdfIn PDF document text
    • https://cyberbirddog.com/userfiles/files/negujegupira.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/g0f85g1iduj4k7gnop5ldj6kuf/xevuzatu.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/57820241989.pdfIn PDF document text
    • https://icoachyou.biz/images/ckeditor/files/18292400171.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87799b06d9---64567643203.pdfIn PDF document text
    • https://telenovella-bg.com/files/63772495956.pdfIn PDF document text
    • https://pametnidom.hr/pametne_kuce/userfiles/file/ladakegezexoxumidebot.pdfIn PDF document text
    • https://egyiksem.hu/uploads/file/zerotusemikirulajapudigex.pdfIn PDF document text
    • https://rtvpuls.com/ckfinder/userfiles/files/nipukaxapegakam.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607c519a035f6---56622039310.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608dc23fda6fb---66468392760.pdfIn PDF document text
    • http://munnarinfo.in/userfiles/file/60672765090.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=franklin+park+mall+holiday+hoursPDF 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_off0000f542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF542 10708 bytes
SHA-256: 18118e425c48f0d5224255c32968178fe6de1605433a11f1aa838b61dc56dffe
font_01_sfnt_off00010d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D85 17128 bytes
SHA-256: c10fd22cccd76a0a37431141dc27531a1cbfb6fafd036ec283db9c8eb93fb750
font_02_sfnt_off00013a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1