Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0decf8971e22c42…

MALICIOUS

PDF

80.1 KB Created: 2021-06-06 09:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2fc37d27351c7acc7d14516c25de8845 SHA-1: 215fcf78cf40da5916bbbedf5f815065937c1f1c SHA-256: e0decf8971e22c4223086cc49b2c6b7798e8cf686cbb5993711d829873a9f0ec
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external resources, many of which are hosted on compromised websites or disposable domains, suggesting a link farm designed to distribute malware. The presence of a callback lure heuristic indicates it may also be used for phishing or tech support scams. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading a trojan disguised as a security tool.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ketchas.ru/uplcv?utm_term=pldt+wifi+hacker+blood+security+apk+free+download+2018 PDF link annotation
    • https://equator-maritime.com/userfiles/file/gafijirawabu.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/69736085555.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/808e22515ee4740d8ed95490252b3f49/90194584547.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/gibixixofatarogitami.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/b558d1b93097694415de8bb1261a58af/85392290281.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/a7182523b2e076ed737215d7d71ef52b/mukokoponubot.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b781fa17f0b---libapaw.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/jajofudamijavejuwatox.pdfIn PDF document text
    • https://marblobathware.com/app/webroot/img/files/wejafewifewepijibew.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16082e641291de---61515842443.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/319947ee9a951afc23e7a8ecb2de5d51/ridalef.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/sj1i1bu5u3d0dqcl01gqjqad0l/52670239429.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/nudorasemuperadovomu.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070df7eabf0d---70872825927.pdfIn PDF document text
    • http://www.asslar.de/downloads/47430171179.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/98d01c4c8b6d11718b625f15280fc49c/jowajesewimirisodup.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160a9783d94ef8---sififibidexezapenutixaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • 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://scripts.sil.org/OFLIn 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_off0000dfbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBD 6160 bytes
SHA-256: f0de8d3e4be5c36ec553f1aeeecf8acb362d2a8b63635b09d944861644dfa6da
font_01_sfnt_off0000f4c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C6 11720 bytes
SHA-256: ab86aed517cabda21863b925a393c571e27cde10ed799b96c1a6b18f2be84670
font_02_sfnt_off00011b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B83 16192 bytes
SHA-256: 296b33a6e69ac3fa8ed420f1d1b401a0712a5a108b7c5c6efc73671719323d57

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