Malicious PDF — malware analysis report

Static analysis result for SHA-256 562196c918ebf6d6…

MALICIOUS

PDF

91.2 KB Created: 2021-08-12 19:13:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c82ca11c131b9cb6c3afc8a0c6a5af60 SHA-1: 8be1528b5c6a886fada18c2e4f65dcf1ac83b254 SHA-256: 562196c918ebf6d6624bcdf68d7e719ab193354ed9bad10ca8a2a31fd6a6cdea
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by a machine learning classifier and ClamAV. It contains a link farm pointing to multiple compromised WordPress sites, specifically targeting their form upload directories. The presence of urgency and callback lures suggests a phishing or scam attempt. The document body is heavily obfuscated and unreadable, but the heuristics indicate a pattern of linking to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 8

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161142559b532a---20042072532.pdf In PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160707c9971229---25941015035.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16111f14eaf941---futeneganipam.pdfIn PDF document text
    • http://htwy.com/upload/file/molawiruxumogimonewine.pdfIn PDF document text
    • http://sangiorgioautoservizi.com/userfiles/files/11509954861.pdfIn PDF document text
    • http://saxonrt.hu/img/userfiles/files/59577646040.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/294fa9cd0eb1419f13b272415e4a3b3d/dowuba.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/e5kqtg8v17okmaka919i2jp3u1/13670686414.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609644e3a6d72---ravuvezuvamulewinekizis.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609177e23d0c7---41002660261.pdfIn PDF document text
    • http://www.yt333.com/userfiles/20210722/file/1626890913.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/27790149413.pdfIn PDF document text
    • http://photou.cc//ckfinder/userfiles/files/zututuxarifena.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/91946908263.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/9a5b07fe8a5d665dea84304570b9e81f/pijumi.pdfIn PDF document text
    • http://bjallstar.com/upload/file/zebezewurin.pdfIn PDF document text
    • https://tonitomov.com/picture/file/91320548399.pdfIn PDF document text
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/16056630640.pdfIn PDF document text
    • http://premiercontractinginc.com/files/file/80011355971.pdfIn PDF document text
    • https://rowanmkt.com/Uploads/ckfinder/userfiles/files/57326476718.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/72fa1cee3a18db77ef897128327fa8bf/kexumulavekado.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab801ca49dc---23528187432.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160798f2dc7a53---revajakebonejikevovavaki.pdfIn PDF document text
    • https://electrabicycles.pl/app/webroot/uploads/file/16201347738844.pdfIn PDF document text
    • http://theofficefurniturestore.com/ckfinder/userfiles/files/49731025658.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160804338518a9---jalitasofe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=how+to+get+pre+authorized+debit+form+cibcPDF 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_off0000fdbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBE 17900 bytes
SHA-256: ea03b9bb37946e98a276e58ec5038635e11a0de2105a9ac52812913dc1034b6d
font_01_sfnt_off00012d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D37 11128 bytes
SHA-256: 399094e6e3ef8d5a861df0ed2c4f13d99b46560171b6629d4677086425186b6c
font_02_sfnt_off000146d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.