Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20b72679bfbbc1f…

MALICIOUS

PDF

70.1 KB Created: 2021-01-28 16:49:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fa029fb1f75e3112e4427ff9ce23c48f SHA-1: 0c4fb0b83ae4024c976466899698606c4055179e SHA-256: c20b72679bfbbc1fe8f49e62521c52ddcc67c5c562c4626d6f0406da441dcc44
194 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/wb?keyword=new%20york%20city%20traffic%20camera%20tickets In PDF document text
    • https://cdn.sqhk.co/gisusisabez/KHhifgj/lacrimal_bone_articulations.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502833/normal_5fd3a5583fd65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380522/normal_5fdddd7b3c8ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483338/normal_5fddbdb9d1fc6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367920/normal_5fdd46a0888a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467561/normal_5fef85f38d544.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389104/normal_5fed76e270474.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456140/normal_5ff5d9fe1b84c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372382/normal_5fc644580193a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419822/normal_5fcc6fa571a6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487631/normal_600ffb21a9043.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471238/normal_5ff282cff0f7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406473/normal_5fcfedd4e5d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495974/normal_600c8a47c6e8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476765/normal_5fd319b1a21c9.pdfIn PDF document text
    • https://cdn.sqhk.co/nesixepo/6zyFbj2/banij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481402/normal_5fe24d335d8c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xeziribosivamis.epizy.com/22269031688.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_off0000d529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD529 5220 bytes
SHA-256: 0a9ffbed662cb8dc43705391c5c897078eececbf32564dac15ba89b4be2dab8e
font_01_sfnt_off0000e6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FE 10684 bytes
SHA-256: d760cc3c385f07ef9fe2a093cb3e80e76df2f8f7b05538ca3c50d72a9d6cdc33

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