Malicious PDF — malware analysis report

Static analysis result for SHA-256 94fdd2f5c5b805de…

MALICIOUS

PDF

61.3 KB Created: 2021-05-20 21:03:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05e3117b467dd9b54439a623e69926c7 SHA-1: e6bd9ffa12d8159be2f106d05a45855eaeb9b7e7 SHA-256: 94fdd2f5c5b805dec7c620dbf190d267a9d596c5715657d072aba4ae7958e693
154 Risk Score

Malware Insights

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

The PDF file contains multiple links to compromised websites, many of which host what appear to be installer files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of external URIs and link farms on disposable hosting further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8124

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/644d4c9eb75947bd01d0ba85ede39bd6/82662377609.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073fc1b4d8b6---kuvizidexulapinu.pdf
    • http://proxima-design.cz/files/file/34630356792.pdf
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/edd4cf37876acfbf773ad1cec0a4a9e1/nagiwolelazedisimolu.pdf
    • https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/tjm69lrkiu3nkrn2jmkht0uo4g/zeliv.pdf
    • http://hongshengfish.com/uploadfiles/20210510/210510185546423261s0mj2luavhba.pdf
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160750428b2256---85167635811.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a65b7c5848c---90147067060.pdf
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/otb67vhntalqf71ecn5a58s1to/nozupe.pdf
    • https://airflow-skateboards.com/upload/file/nisaduxiruxibu.pdf
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/n6pi0peuqr7ubs8hmrpfk21j67/13087224630.pdf
    • https://alianzatours.com/imagenes/file/60631234693.pdf
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/6c7bbc24a2a82da8f8c5426d2ba769d8/gonumawapelozomewanu.pdf
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/e76a214918eab4df7125215790d73788/45454067724.pdf
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c31e0ebc7f---guserosomila.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=brave+browser+offline+installer+github
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d533.bin
7b34534b7fd05598d76d8501b64b2b133dcaf430398124ec6a0d047a47bad17e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD533 5372 bytes

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