Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b868ddb996ef5a…

MALICIOUS

PDF

90.1 KB Created: 2020-12-25 10:07:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: ad0439846f5ce1735a05c5db715742dc SHA-1: 48705f2db28106445ee5e71ac7e028f26fca7d3a SHA-256: 72b868ddb996ef5a02a0a1f4edba52612730a600c92ed0f0b77f1c70fffe926b
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=dwarven+to+common In PDF document text
    • https://cdn-cms.f-static.net/uploads/4401538/normal_5fae104f0829b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413226/normal_5fc0d09684f69.pdfIn PDF document text
    • https://cdn.sqhk.co/muxigatatini/hf4kib7/animus_harbinger_switch_analisis.pdfIn PDF document text
    • https://datirelegewewat.weebly.com/uploads/1/3/4/3/134329883/c45be52e80bd8.pdfIn PDF document text
    • https://kulirudezu.weebly.com/uploads/1/3/4/5/134583820/doxure.pdfIn PDF document text
    • https://bafuselowazela.weebly.com/uploads/1/3/5/3/135318440/d560c.pdfIn PDF document text
    • https://cdn.sqhk.co/begorukenega/R0Khgjh/zevepamajebujidajiduzija.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/rodigapigeta/13880803243.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/jusonujogodif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d14deb8-fc32-4e0a-a0fa-aae43ff5a22e/pimolajovupar.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/soccer_heads_2014_world_cup_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/bt_broadband_setup_guide.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_off0001272b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1272B 4888 bytes
SHA-256: 51010dbbae98fe4084c100fe75932de8671cad66969978d9ac44aaaa7af0e8df
font_01_sfnt_off000137d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137D4 10936 bytes
SHA-256: c59bcccddf2385485689f8146de632619a67cd38d97b94a815407850dc5e613e