Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd9f6f6098f0791…

MALICIOUS

PDF

59.1 KB Created: 2020-11-22 15:20:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 4457c4ed2eaf47ced74e15bbf634ac5e SHA-1: ae6b94263a6a5b6591f2470da14f07a09c8fa251 SHA-256: 3dd9f6f6098f0791ff693dec55cc0b87b8a7a37dc77b6f659e07a3a2bbb60d35
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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.
  • 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.
  • 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://ggtraff.ru/123?utm_term=figure+drawing+for+all+it%2527s+worth+portugues+pdf In PDF document text
    • https://gorigopaf.weebly.com/uploads/1/3/4/3/134341526/naximezoruvuwefut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454673/normal_5fa129fc2ce74.pdfIn PDF document text
    • https://resodarapasak.weebly.com/uploads/1/3/4/6/134659305/9d37ede54a.pdfIn PDF document text
    • https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/b28803e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465564/normal_5fa49dd689efa.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/nesubine.pdfIn PDF document text
    • https://sigozebuxofiko.weebly.com/uploads/1/3/4/3/134372047/nidagalonufazoxowide.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/wazotojemov/78007298994.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/megisoxazife.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/87355311765.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_off0000a9bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BF 5384 bytes
SHA-256: 53a1ca63cf17a42846f4c404e9b1a2c7b455eed67466ce00e69f362b29190c55
font_01_sfnt_off0000bc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC2C 10920 bytes
SHA-256: d617580fa3d702a9d64075fa4b60149f332df118cdf9215ac2d2e3c2def3f476