Malicious PDF — malware analysis report

Static analysis result for SHA-256 5feb552f473a58cd…

MALICIOUS

PDF

64.0 KB Created: 2021-01-06 13:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5ca9c2180da67df0ae1d8141eaff236d SHA-1: 78418e3ab75006ee5d0d8804697f800ae8d860a7 SHA-256: 5feb552f473a58cd15f636658f065b9a8084fbb8e63d0532d0fd7267b1532a67
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that redirects to 'https://traffset.ru/123?utm_term=dremel+395+manual+pdf', likely intended to deliver a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'Dremel 395 manual pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/123?utm_term=dremel+395+manual+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373261/normal_5ff29644c84b9.pdfIn PDF document text
    • https://cdn.sqhk.co/kegetaxob/R5DUv6H/traffic_road_signs_meanings_philippines.pdfIn PDF document text
    • https://tanedozuwo.weebly.com/uploads/1/3/4/6/134644204/6649756.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369334/normal_5fd61de3e4978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401696/normal_5fb73495ab92a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_5fb72530d9d24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426416/normal_5fcdbc7d4ad0a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/af37ce28-a6a8-4360-b564-0bc5892adacb/84801612046.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/gavabagovuvofafaniradurel.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/gofasomasetunixidi.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_off0000bd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD17 5452 bytes
SHA-256: e842f5824c562c87a0428bf93068e0a89acece672ad07f746086c3430466116b
font_01_sfnt_off0000cf8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8F 10696 bytes
SHA-256: e70e64db24e9b5bca04a2f5f38a647e89c15062b910a10354501c113d5143f40

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