Malicious PDF — malware analysis report

Static analysis result for SHA-256 74259897c2dc8671…

MALICIOUS

PDF

71.6 KB Created: 2020-11-10 18:29:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 6687e634426e45242442a15baf56763a SHA-1: 378403308dd616969df2aaa7db1a79b613607b4d SHA-256: 74259897c2dc867150faabd4f4cfb9acced5bf61d22994ee570b5d294ede5256
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/aws?keyword=rocket+man+lyrics+alex PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f873608a8186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5f9aedc27d35a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402948/normal_5f919ad27dd9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5fa74310989e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394072/normal_5f8ffcba4ce68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f872179a44ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451575/normal_5fa563af2acee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393486/normal_5f9e1130df7f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416128/normal_5f9894f5b7f38.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/julaxel/high_temperature_adhesive_home_depot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2c6496e-bd27-42f6-88da-9720de0ef30d/29801883874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e349d6f1-857a-402a-ad6b-1bb7b0f748ed/xuminaxonajuxudasarom.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/83311485966.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_off0000da3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3C 5184 bytes
SHA-256: 40dae388284444492e109f397642fa155353bd38a48c894ac2212f6aaa50c521
font_01_sfnt_off0000ebd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 11508 bytes
SHA-256: e04b7bb59e4b12bb8d35d048e7b3605a5d8bc99b006d664b8fd7583321ee8ac1