Malicious PDF — malware analysis report

Static analysis result for SHA-256 75012402d6d2ea51…

MALICIOUS

PDF

51.9 KB Created: 2021-01-03 10:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d8e326a67c6198f66cb49dc2120bb6c1 SHA-1: 2f77541b7a2bb5814c61e37ae8d3e1d113148790 SHA-256: 75012402d6d2ea516437b94e10a37dab6e6ddee0fd777a8f2835edae51db13ce
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. One critical heuristic identified links to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for malicious redirection or content delivery, aligning with phishing or malware distribution pretexts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7516

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 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.
  • 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.
  • 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/wb?keyword=showdown%20football%20score In PDF document text
    • https://cdn.sqhk.co/pimibopugugo/wxBMhe5/cthulhu_wars_onslaught_3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456379/normal_5ff14d6daabca.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/Vhfjcgf/a_dance_of_fire_and_ice_discord.pdfIn PDF document text
    • https://ziresaro.weebly.com/uploads/1/3/4/5/134509830/xefusopej.pdfIn PDF document text
    • https://cdn.sqhk.co/zoboxoba/iZjigiZ/dog_simulator_animal_life_mod_apk.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lonevu.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/danovupituzureg.pdfIn PDF document text
    • https://cdn.sqhk.co/najuvotuwoz/cLviiB1/give_way_to_oncoming_traffic_sign_meaning.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470221/normal_5fec04b4005e9.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/gisAnjf/dining_room_furniture_ideas.pdfIn PDF document text
    • https://kizegugiruliti.weebly.com/uploads/1/3/4/7/134729255/869cc5877ecfdb7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643039ae-82bf-4902-844d-9af811ebd734/ripabodewaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/zoram.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/vijuzofuxedonixofufo.pdfIn PDF document text