Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddde31fd2e90bc06…

MALICIOUS

PDF

79.6 KB Created: 2021-02-18 23:41:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7fa2864d96df7661e933a519ed532f96 SHA-1: a9f4c9a220eeab50609f01f552fbf6aea1b91b86 SHA-256: ddde31fd2e90bc0682a2a65c1bd517ff346b5924df666bbf5c6ee8253a7e3931
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/wix?keyword=wind+direction+cleveland+hopkins+airport PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5fc94bcd386f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470968/normal_5ff3bf56977e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420930/normal_60224e607163a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465012/normal_60225a0c47e56.pdfIn PDF document text
    • https://cdn.sqhk.co/miloxuso/ghqja7y/92498326029.pdfIn PDF document text
    • http://lerob.info/pinobon12am.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/idqY4ia/mushroom_wars_2_forge.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxokakijefe/0GZpigy/cnc_machinist_salary_ohio.pdfIn PDF document text
    • https://cdn.sqhk.co/dipujabuxiw/fhi8wLI/inspirational_disney_movie_quotes_for_work.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/vesavedavofetomabuju.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/bifiwezigad.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/75153822661.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/kakasaparodakibema.pdfIn PDF document text
    • http://xewewiwuxadul.rf.gd/gisaxama.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/72568938970.pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB36 5300 bytes
SHA-256: 88e53f5d8a641f30dc8b5c3e8e7100727e40e5bf431a5cd7b44eb435a0ab9760
font_01_sfnt_off00010d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D44 10568 bytes
SHA-256: 0f643d3d24fac5b75aa494bdebce314977edce99aebadf4aab849c6836166377