Malicious PDF — malware analysis report

Static analysis result for SHA-256 71b87faf98dc9226…

MALICIOUS

PDF

50.6 KB Created: 2021-01-04 01:10:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 578c8d1490dc11a4b6e3344a0a839483 SHA-1: 90270816163d518c7ade99262fb53be668b49cdc SHA-256: 71b87faf98dc922674ee45decd622179a454bfc5db8c3de6f798a876635b4e95
242 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are hosted on disposable domains or known malicious redirectors, indicating a phishing or scam attempt. The document's metadata suggests it was generated by wkhtmltopdf, and the content appears to be a lure disguised as an instruction manual. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7515

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/aws?utm_term=dremel+3d+printer+instruction+manual In PDF document text
    • https://nokavapeselodes.weebly.com/uploads/1/3/4/6/134638024/nasinefezopu.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/ciasgj3/express_toll_pay_colorado.pdfIn PDF document text
    • https://welomutulek.weebly.com/uploads/1/3/4/8/134873792/8548851.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/9e32d.pdfIn PDF document text
    • https://gifuroromila.weebly.com/uploads/1/3/4/3/134377961/lanapusoluxukixamiwi.pdfIn PDF document text
    • https://bunemevomuw.weebly.com/uploads/1/3/4/7/134733911/nazalar.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/iiaISgf/switzerland_coronavirus_statistics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_5f8d65a6988c7.pdfIn PDF document text
    • https://cdn.sqhk.co/merodobiweve/TyDOpia/falling_star_to_hit_earth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a14e66e-93f7-419d-b30b-aef0d5a61c21/rarukibonezakesilimaguv.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/athabasca_university_transcript_request_form.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/creature_3d_hd_film.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/083c1c6e-8207-4bd2-a6d5-632c4fe8b482/wigukoxibesoxivitas.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/balopikixivulukunuzi.pdfIn PDF document text

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