Malicious PDF — malware analysis report

Static analysis result for SHA-256 44176642a4065e75…

MALICIOUS

PDF

81.6 KB Created: 2021-06-17 18:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7032afb8260b8c64026cba477448280 SHA-1: 66dd217f6c2ce5a57353bb91d7c40f45e0489250 SHA-256: 44176642a4065e75a70b37497e65993538eb29e2a84167f86b17537102236a6f
164 Risk Score

Malware Insights

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

The PDF document contains numerous links to compromised websites, disguised as a movie download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading malware. While no scripts were directly extracted, the presence of external links and the overall structure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b6116ab92dd---62477698288.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee9daf2976---lezuro.pdf
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c57274f1f84---95363618796.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16075b04a12807---jagefumafasilapuzerupid.pdf
    • https://betenrealestate.com/sites/default/files/file/jiwuzuzapegiwuguk.pdf
    • http://novussiteyonetimi.com/uploads/file/55710009720.pdf
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/04414798f6effca93867d2873a489c35/23018807853.pdf
    • http://muskogeeroughers1967.com/clients/9/98/9899c641331876fb313f08ec475a0443/File/30698342349.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/sdda59cqbqeljo4nuffi02i1k4/jujebizivisuxa.pdf
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/mgr3a9mu29i5kmpu5v31ieqde1/jejuzejivatijufovilejo.pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608662fe90e3d---42349039757.pdf
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/9765a1bc0cbac84e77687ec6505076d3/10326267334.pdf
    • https://twr1115.net/files/fckeditor/file/tusikufesesorikij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=mission+mangal+full+movie+download+hd
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f2b989a7c7---53096741761.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100b5.bin
c1ea367c5d20d8ca7c8002c8d606d80afba890a0e79ac6369f113f9c1c5e1f4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100B5 5384 bytes
font_01_sfnt_off00011302.bin
3aee0268c69dd457d6010a847383481a8ee4688d6625f558f23c5dccf54f96de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11302 11580 bytes

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