Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fcdf83a02dfd19…

MALICIOUS

PDF

41.6 KB Created: 2020-11-20 09:12:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dd027947551b51f6275016d09768ea9 SHA-1: 9d658d134e64eee684743ce5ef6cb7c3bccc5972 SHA-256: 74fcdf83a02dfd19a2ed4fa1db1ef3fc169f78f06b9cc23b0742ad91689364d3
262 Risk Score

Malware Insights

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

This PDF document functions as a phishing lure, presenting itself as a worksheet but containing numerous links to external sites. One critical heuristic identified a malicious redirector link, and ClamAV detected it as Pdf.Phishing.Trojan. The document's structure and embedded links suggest an attempt to lead the user to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7539

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/aws?utm_term=first+conditional+worksheet+printable
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f875ad446f20.pdf
    • https://xotogulil.weebly.com/uploads/1/3/4/6/134655180/dikizo-fozugobowikew.pdf
    • https://fifevogu.weebly.com/uploads/1/3/4/6/134602809/wuvutigaxaxoni_mabepowona_rosowabi.pdf
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/1742738.pdf
    • https://fezivalolir.weebly.com/uploads/1/3/4/4/134461714/gubefanitar.pdf
    • https://kovipokuvukos.weebly.com/uploads/1/3/4/4/134497495/gegipoka.pdf
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/4a90eaba6.pdf
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/40b808dd9b7.pdf
    • https://lonodoxelu.weebly.com/uploads/1/3/4/3/134305804/1962896.pdf
    • https://bapoxaluw.weebly.com/uploads/1/3/4/7/134717037/rezojoxejesezeruroka.pdf
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/46fc7defa5a7.pdf
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/rinozeleb.pdf
    • https://tatogupuragafa.weebly.com/uploads/1/3/4/0/134096405/retezimisefipajak.pdf
    • https://cdn-cms.f-static.net/uploads/4383807/normal_5fa17a26a6bcb.pdf
    • https://s3.amazonaws.com/suzitivasekoga/28196530220.pdf
    • https://s3.amazonaws.com/luresimosip/sesaginifojagiwux.pdf