Malicious PDF — malware analysis report

Static analysis result for SHA-256 729a28fce74d9301…

MALICIOUS

PDF

71.7 KB Created: 2020-12-25 15:43:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 079f6239031e609a6c0934d4fe216f15 SHA-1: 9da06922e4ada7986298936908fcf478ef07a40d SHA-256: 729a28fce74d93018c7bad66be89bd9074b513593930cebf1c80254b4647c1eb
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirection suggests an attempt to lure users to a malicious site, likely for phishing or to download further malware.

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
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffine.ru/123?utm_term=ihip+side+swipe+bluetooth+headphones+manual In PDF document text
    • https://cdn.sqhk.co/fegujajox/Tpijgic/xodojejino.pdfIn PDF document text
    • https://wesaxewotivaf.weebly.com/uploads/1/3/4/5/134578523/38f904e0.pdfIn PDF document text
    • https://nipokilalupa.weebly.com/uploads/1/3/4/4/134485501/falilowixonomuzog.pdfIn PDF document text
    • https://bibomezu.weebly.com/uploads/1/3/2/7/132710601/suzowegud.pdfIn PDF document text
    • https://niritopep.weebly.com/uploads/1/3/4/6/134634222/terawolopawevaz-zitizuvuzo-kurokesi.pdfIn PDF document text
    • https://cdn.sqhk.co/tewisifupib/jjhAleE/mukarinanofuvifi.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/8839282.pdfIn PDF document text
    • https://kedixezowudogaj.weebly.com/uploads/1/3/4/6/134618790/60fffaef052a.pdfIn PDF document text
    • https://xifamosavujefiv.weebly.com/uploads/1/3/4/4/134457952/c6d0c46b41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dba6831-6434-4b9c-9fe0-a09fd9cd6afb/star_wars_attack_of_the_clones_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdadfb78-217f-44a0-a50b-f56192f68e6d/27145327335.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66ef18c8-f7c7-4376-bd5f-9046427ba4e6/piwiviwonigivaferikikela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4370f6e2-b61c-49a3-b5a4-647642bf6565/indy_rc_raceway_and_hobbies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9dc5060-a7c8-4d96-a520-abb159e6ce0c/ceramic_water_dispenser_home_depot.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_off0000d949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD949 5272 bytes
SHA-256: aa5371291b25ff76b9881a90f121a4b61463aae87548f41c5dfa1eec0e43e582
font_01_sfnt_off0000eb1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1A 11420 bytes
SHA-256: 560b02ddfecd7ea4781a4076b11a8470aa0fe86e985b8eea87e2356abb127d2b