Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25d2495ecd222f9…

MALICIOUS

PDF

66.9 KB Created: 2021-01-07 22:29:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: e6cf28f56efe23557c018276c5bb8116 SHA-1: f707e7f19e25ce8a9212d6dbaf769e97c5dbdb19 SHA-256: a25d2495ecd222f901c4a9416005033744563be99fd3e224ee3ec2564aaed363
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/shook?utm_term=piggly+wiggly+store+manager+salary PDF link annotation
    • https://barezixajeg.weebly.com/uploads/1/3/4/3/134318527/petilivekifiz_sewajavijex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370780/normal_5fcb6dfba8fa1.pdfIn PDF document text
    • https://dituxunejew.weebly.com/uploads/1/3/4/3/134324597/d5960a9a5c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375196/normal_5ff6098cd29b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370294/normal_5f8ea7dc16bbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451567/normal_5f9f701b3e7f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416810/normal_5fe4f49625c8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411916/normal_5fc97a7405563.pdfIn PDF document text
    • https://dipitamadupod.weebly.com/uploads/1/3/4/8/134882687/5963130.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/xifabilejilab/dekugarinubewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/881cee30-7325-4573-9d93-82137ad52909/40387275272.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/97733810795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26ca1258-d098-4e03-b5c6-8f29501557a4/fosalorad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33124c6b-2495-4c94-98f8-9e59dd45c805/76529645610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8c0ce0b-c2ed-461d-acae-61015b1cdc11/gepexelobava.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_off0000c727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC727 5200 bytes
SHA-256: fe2822aa4497e5de3f50565bb1ce7d317f2e4da95ab076a920aeba8f29a11de2
font_01_sfnt_off0000d8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D7 11168 bytes
SHA-256: fc0bd03a17d222405b675e831e1698aa593ae19b0cc8ed9662a6e0df4150d763

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