Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bc8268039bbcba0…

MALICIOUS

PDF

63.7 KB Created: 2020-12-24 13:09:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2ba8f46b7f9f8e20c2f70b61137b4e91 SHA-1: e3e9b6d4d6250cc8208c2b6b29adc14cff18fb55 SHA-256: 8bc8268039bbcba0139e88132361332ac19f37dbc359eb75f00c1b79096ea792
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to 'trafficel.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Adblock plus safari mac', indicating a social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafficel.ru/aws?utm_term=adblock+plus+safari+mac PDF link annotation
    • https://cdn.sqhk.co/tinajugezepi/PbijihI/67792063576.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/1ib5l0R/33645322614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479718/normal_5fa930ba94d84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378383/normal_5f98a0ea8a73d.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/hdHjgON/craft_vegas_block_craft_games.pdfIn PDF document text
    • https://cdn.sqhk.co/duzemata/ifBiebW/91226213750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451019/normal_5fad6aac02985.pdfIn PDF document text
    • https://cdn.sqhk.co/wememiguw/7Cihjbm/47830018640.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381294/normal_5fde6fd043b66.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/bikikanafopavu/kitty_party_paper_games_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/aurora_learning_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/firefox_60_esr_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/waxejajinigafu/zegat.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/30238620381.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000bc0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC0E 5492 bytes
SHA-256: 2d72525e4d6f77fd9fc0ace60966d2d967042795449b05da7d09085faf08fd80
font_01_sfnt_off0000ceaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAA 10396 bytes
SHA-256: f5e976ea59d05c18756c36d89fbb1a41f85de5cf79e3b47a567dc02c1ae682a3