Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd60049d13726cbd…

MALICIOUS

PDF

82.8 KB Created: 2021-06-25 16:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 85d0b2179f579d14888bdb3447b9eac3 SHA-1: 840cf9caf1404f369f539e7fd98cc9dd5b05dc65 SHA-256: bd60049d13726cbd725171665a88c225be6befe96133a849fc773ab51e357380
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress sites, likely to host further malicious content or redirect users. The 'SE_CALLBACK_LURE' heuristic strongly suggests the document's purpose is to trick the user into initiating a phone call, a common tactic in tech-support scams or callback phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a27e23ec681---dodatik.pdf In PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/vksl2sn0a5drh9iq4t20igkifj/73934253242.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd710cff78---74766360504.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/sulagefevasew.pdfIn PDF document text
    • https://alsterparkett.de/wp-content/plugins/super-forms/uploads/php/files/eo4sstitpjdsgnavs5hkviq4f2/2271204942.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/58782844006.pdfIn PDF document text
    • http://asianaccounting.com/admin/fckeditor/userfiles/file/bufasipitilemadimufopufif.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607b08055b115---ruxezutaritel.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160b1ee61d0aa7---80811415691.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/4b96a2d38fc9afe131a10d3cfe83346d/benamojerozomubinob.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/59308135886.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5465f1149---sipafugufupiki.pdfIn PDF document text
    • http://metamorfoza-krosno.pl/userfiles/file/foxipigoruniku.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16073a3f314f22---sonevawezexojuvaxowip.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/cc43cda9bcb02bc41fc98299045b7e03/fulexubobamona.pdfIn PDF document text
    • http://fly.no1-yes.com/userfiles/file/radexigojamidat.pdfIn PDF document text
    • https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/62ca9b1e2f1592b195ceaf473b54ae94/13460245005.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb079edf84---bubividu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=come+back+to+the+five+and+dimePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08A 10756 bytes
SHA-256: e4d922610a2da2667ceda8aeec8610010f6d11dcd1b26b5144561d5597af840d
font_01_sfnt_off0000f925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF925 17168 bytes
SHA-256: 7aa86f09f2814f2495855d817b89a4c9149adf2afa8b0ace2e509b921206b381
font_02_sfnt_off0001261a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1261A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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