PDF malware analysis — malicious · 1f21cc55a85f8c7a

MALICIOUS

PDF

42.2 KB Created: 2020-11-23 12:52:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5f3087c49d2b20821792fd1478cc68b3 SHA-1: 4577138dc6331099e4c2246027e85d2b341447a3 SHA-256: 1f21cc55a85f8c7a9b30710e615e58e284db1784ac891b6c17cc87a10409b7ac

232 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF is identified as a malicious redirector and phishing lure due to its structure (image-only with a clickable action) and the presence of a critical heuristic firing for malicious redirector links. It contains a link to gettraff.ru, which is flagged as malicious. The document also hosts a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.7109

Heuristics 5

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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/strik?utm_term=android+oyun+club+hungry+shark+indir
- https://rokozozo.weebly.com/uploads/1/3/4/4/134498035/7850308.pdf
- https://piwunosorelid.weebly.com/uploads/1/3/4/5/134590209/tozude.pdf
- https://s3.amazonaws.com/tamobalasu/1st_grade_reading_comprehension_worksheet.pdf
- https://s3.amazonaws.com/pukiza/dragon_genetics_lab_principles_of_mendelian_genetics_question_answers.pdf
- https://s3.amazonaws.com/vojapu/answers_etc_check_cashing_software.pdf
- https://uploads.strikinglycdn.com/files/f5ded0c4-5a45-4fab-b9df-27e99dea307e/minnie_mouse_template_printable.pdf
- https://s3.amazonaws.com/jirebonudur/68559779262.pdf
- https://s3.amazonaws.com/memul/62804294800.pdf
- https://s3.amazonaws.com/solonebosop/fresh_squeezed_sugar_cane_juice_for_sale.pdf
- https://s3.amazonaws.com/zetare/lapolabokitofagelixepeb.pdf
- https://s3.amazonaws.com/vovuzize/nikojesufekuwimoganosif.pdf
- https://uploads.strikinglycdn.com/files/f2702258-59fa-4fca-99a9-b55b2ba2d011/libro_calidad_total_mercadona.pdf
- https://s3.amazonaws.com/dazifozixawus/ielts_reading_practice_test_papers_with_answers.pdf

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