Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f32c2d287661e6…

MALICIOUS

PDF

68.8 KB Created: 2021-01-08 13:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 065965ff14cbb263ac816c2edce69fcc SHA-1: e583794355b32bf5dc60f8ff96b1390b04f596be SHA-256: 96f32c2d287661e63ba4029eb476c973234e55cd89605992636e711af07737dc
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious and a phishing attempt. The 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristic specifically indicates an image lure linking to an SEO redirector, which is a common tactic for phishing or malware distribution. The embedded URL 'https://traffset.ru/123?utm_term=abzurdah+pdf+descargar+gratis' is the primary indicator of compromise, likely serving as the entry point for the malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffset.ru/123?utm_term=abzurdah+pdf+descargar+gratis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8747598303a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393353/normal_5fa4310be6538.pdfIn PDF document text
    • https://mumevifovamix.weebly.com/uploads/1/3/4/4/134486033/2585736.pdfIn PDF document text
    • https://sutofuwanunow.weebly.com/uploads/1/3/0/8/130874369/8006081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459788/normal_5fe94fccb6fd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424036/normal_5fefabff49508.pdfIn PDF document text
    • https://cdn.sqhk.co/ganidabizi/aKbGjhJ/wedding_cake_decorating_games.pdfIn PDF document text
    • https://cdn.sqhk.co/mozedizupi/pLifgfe/ledupijexusevilajomik.pdfIn PDF document text
    • https://cdn.sqhk.co/dojopaxitovi/ejbjaUF/green_bay_packers_score_live_stream.pdfIn PDF document text
    • https://feroraja.weebly.com/uploads/1/3/0/9/130969346/305591.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/917b6717-5270-4c59-94f0-c7191cf94b15/casa_bautista_de_publicaciones_libros_gratis.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD9 5564 bytes
SHA-256: 95adfdc2d0a80b10effd0565354679a6bc7c32a175dce0140a2ef17cf5c53fa5
font_01_sfnt_off0000dfc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC1 11468 bytes
SHA-256: 39bdf7eb9c869a2385e99926a35a95877b6b27cc57629e1a391a92a476853ab2

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