Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad96cd9a1a159ab…

MALICIOUS

PDF

68.9 KB Created: 2020-11-23 19:48:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e05ec7246354cb42309713e2fd09adb7 SHA-1: cb72fe534bc98648cd265015f8427aabe87b9173 SHA-256: cad96cd9a1a159ab2d581369cd585c149764f3952ac7311b10e7ccb6682382fd
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF file impersonates the brand 'Norton' to trick users into clicking a link, as indicated by the 'SE_BRAND_CREDENTIAL_PHISH' heuristic. The link redirects through an SEO redirector to a phishing page hosted on weebly.com. The ML classifier and ClamAV detection strongly suggest malicious intent, likely credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://senovetesu.weebly.com/uploads/1/3/4/7/134710525/6fe1d.pdf.
  • 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://trafffe.ru/strik?utm_term=fastest+american+production+car PDF link annotation
    • https://senovetesu.weebly.com/uploads/1/3/4/7/134710525/6fe1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5f8cc62a29d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_5f8729949dc3a.pdfIn PDF document text
    • https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/1e6340157e2a.pdfIn PDF document text
    • https://xufuluzigi.weebly.com/uploads/1/3/4/2/134266078/vojuwadujebem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450890/normal_5fb9be2d4b185.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gozifep/28808962755.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/41327289414.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/lagilorogiwibud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97a76a4a-bd9c-4f71-b210-ac12acfdb764/cura_anet_a8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6afb7c9-4cff-49e8-a24d-801c2246c040/mustang_2040_skid_steer_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC299 5024 bytes
SHA-256: fad89a4869b11762b1877ab29d1a67ebc4a831b74217f10b6fc0d7e3158a3391
font_01_sfnt_off0000d383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD383 11000 bytes
SHA-256: f9de554dcddb3b3d96b976873134fd6d0519a84800690e83b774fcb928146a06
font_02_sfnt_off0000f8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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