Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ca38a836a30991…

MALICIOUS

PDF

67.2 KB Created: 2020-11-11 09:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: b2680b4dc5f546840a51fa5e1ac80aa0 SHA-1: b65129c26ad9257ba6dfe46ac44a6efa4c1ff967 SHA-256: 00ca38a836a30991aced3cc1d15fc088f68894cac529fe94b6b3edf439494170
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/strik?keyword=kinetic+energy+problems+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386081/normal_5f8d2568e8f02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369919/normal_5f93d582f1234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f8d7d48f1d9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384825/normal_5f918afd6ee7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407100/normal_5f9f3b4442c06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384655/normal_5fa628f78be6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_5f8e02a01dca9.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/lukepepe/67633229655.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/85206227683.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/cat_mario_2_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c65b2321-426e-4688-a952-f330b7ada132/vanifewidurixob.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/93992045312.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_off0000ca81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA81 5504 bytes
SHA-256: 7e4d65f4457d03a38bfb9101774b0e8e71a24e71431c946d84244c2718f5423d
font_01_sfnt_off0000dd2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2A 10336 bytes
SHA-256: 6910a83512dca7ce92ee1c3350d6b5c2b63679f15b3145683f2d1e958555a869