Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebfdea3f2f83b7f…

MALICIOUS

PDF

43.2 KB Created: 2021-02-24 22:15:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35cab3999a70ac9598c677e1eac42bab SHA-1: 7b31170fb2203531b4e414a50b20d339a28681f6 SHA-256: 5ebfdea3f2f83b7f64898c198cf15d1b74f76955f7f920937e627e7240b032fa
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a malicious phishing lure due to its image-only nature and embedded action trigger. It contains numerous external links, with several pointing to potentially malicious domains. The ClamAV detection and ML classifier further support its malicious classification, indicating it likely serves as a gateway to further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6638

Heuristics 5

  • 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 43 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/wb?keyword=curso%20de%20ingles%20do%20jerry%20download%20mega
    • http://particulier-societegenerale.xyz/heath_ledger_toxicology93gii.pdf
    • http://wemuwetafivaxe.sportsontheweb.net/deriluduxobogu.pdf
    • https://gafapelisepofas.weebly.com/uploads/1/3/4/7/134762307/4296581.pdf
    • http://jilet1.club/dajosobukuwd1hx.pdf
    • http://axecheat7.xyz/informal_side_of_bureaucracy_in_sociology_examples1oquk.pdf
    • http://fepaporipevari.mypressonline.com/4593079477.pdf
    • https://ditomivowulute.weebly.com/uploads/1/3/4/6/134679561/4955328.pdf
    • https://s3.amazonaws.com/tanapilamaxi/dr_wellness_hot_tub_models.pdf
    • https://s3.amazonaws.com/vukusa/reading_comprehension_class_8.pdf
    • https://s3.amazonaws.com/dumupa/what_are_some_good_town_names.pdf
    • http://webubekesivamuf.epizy.com/takoxezosu.pdf
    • https://s3.amazonaws.com/luropi/beaver_builder_pro.pdf
    • https://s3.amazonaws.com/wetevali/board_of_resolution_format.pdf

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