Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dbb9e0c95e2a3c1…

MALICIOUS

PDF

61.1 KB Created: 2021-01-12 11:19:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e10d8296b49a8b50024f3507a9978799 SHA-1: fe2e4ef29c827691c016d238f37a3d4d153a2d55 SHA-256: 8dbb9e0c95e2a3c1ec2768909dd48a094a6d13632697c03c6f498d3c48bfb86f
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The document contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm designed to distribute malware or phishing content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9878

Heuristics 4

  • 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.
  • 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://traffmen.ru/aws?utm_term=manualidades+navide%25C3%25B1as+con+discos+cd In PDF document text
    • https://site-1166701.mozfiles.com/files/1166701/matojefe.pdfIn PDF document text
    • https://site-1201024.mozfiles.com/files/1201024/petadumuve.pdfIn PDF document text
    • https://site-1176201.mozfiles.com/files/1176201/63032989593.pdfIn PDF document text
    • https://site-1168377.mozfiles.com/files/1168377/woody_block_puzzle.pdfIn PDF document text
    • https://jabuzowe.weebly.com/uploads/1/3/4/3/134312688/fabugugo.pdfIn PDF document text
    • https://site-1194623.mozfiles.com/files/1194623/ww2_u_boat_submarine_commander_apk_full_download.pdfIn PDF document text
    • https://cdn.sqhk.co/malofavu/5ccwJec/mini_pancake_maker_pan.pdfIn PDF document text
    • https://site-1178114.mozfiles.com/files/1178114/pafirerofale.pdfIn PDF document text
    • https://site-1166597.mozfiles.com/files/1166597/screenshot_android_htc_10.pdfIn PDF document text
    • https://site-1201164.mozfiles.com/files/1201164/xbox_gaming_headset_with_mic.pdfIn PDF document text
    • https://mudukexot.weebly.com/uploads/1/3/4/6/134629884/waxetokifaxinep.pdfIn PDF document text
    • https://site-1168030.mozfiles.com/files/1168030/pokemon_trainer_club_unable_to_authenticate_android.pdfIn PDF document text
    • https://site-1204796.mozfiles.com/files/1204796/nutolaxavep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/checkout_51_app_for_android.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC657 5112 bytes
SHA-256: f7cb4b8f700574bb5c112549c32d128ff8a04ef34b89925793e8c315b653fe8c
font_01_sfnt_off0000d7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A5 10384 bytes
SHA-256: ae64b8fc9328f3feb9715f75b48c344364aa90d9595ff7c36954a19741d4fcb0

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