Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7e936bd81718883…

MALICIOUS

PDF

41.6 KB Created: 2021-03-09 11:03:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 243a38683d81ea26efa725811f30f593 SHA-1: c55231fc4aee6fcda35e603cac54b3ede0674e98 SHA-256: d7e936bd81718883ea97b6cc907255f71778e35cb11fff5219926964b42c6338
202 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is identified as a malicious redirector link, employing an image-only lure typical of phishing campaigns. It contains multiple links, with a primary one pointing to 'yafferge.ru', a known malicious redirector. The document's structure and heuristics strongly suggest it's designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8150

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://yafferge.ru/aws?utm_term=how+much+does+a+sub+zero+compressor+cost In PDF document text
    • https://s3.amazonaws.com/nawosineromigi/gig_guide_manila.pdfIn PDF document text
    • http://6gusevshop.space/jetusumukibezofinewijirxtyev.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/nigeria_vs_atletico_madrid_match_report.pdfIn PDF document text
    • http://marketop.club/6369218225qf1tp.pdfIn PDF document text
    • http://bristol-yalta.run/36_questions_for_couples6w2ku.pdfIn PDF document text
    • http://nesobaka9.xyz/bullet_smoothie_maker_amazont52n6.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/19951267630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402247/normal_6017fa9d1c879.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372384/normal_5feefcc98515f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380523/normal_5fc86e473a9c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392854/normal_5ff4473c57889.pdfIn PDF document text
    • http://stnold.com/345e3tt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414869/normal_5fd5f886ec3b2.pdfIn PDF document text
    • http://gordei2d.com/cryptocurrency_for_dummiesdqhsy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd2499f6-448e-492e-ab68-c492443a1278/mini_14_scope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5aa334e-6d72-4470-9bde-0e3dd2cf5325/how_can_i_play_a_mini_dv_tape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2593800-0447-4469-87ff-5976f32e83dc/87333865881.pdfIn PDF document text
    • http://winexuxipowef.epizy.com/tinalelisafevuwerotoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90366864-fdd7-410a-9de9-2b7f56d79a2b/lojiniwigejojefup.pdfIn PDF document text
    • http://bujubigakokuv.epizy.com/ranger_leveling_guide_p99.pdfIn PDF document text

Related samples 8

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