Malicious PDF — malware analysis report

Static analysis result for SHA-256 42abc07b305c5a13…

MALICIOUS

PDF

74.1 KB Created: 2020-12-24 05:17:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b71c12e1deeae5066481e7718a09852e SHA-1: c0291a0e15d2b424d7d21754363599b52afb859d SHA-256: 42abc07b305c5a13525f45e894438fd5d69bfc69498971372bca3ae512374300
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 identified as a phishing trojan. It contains an embedded URI pointing to 'https://traffset.ru/123?utm_term=armageddon+apk+mod', which is likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains references to 'Armageddon apk mod', suggesting a lure for users seeking this software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=armageddon+apk+mod PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405430/normal_5fa368c54c2e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481821/normal_5fb6ee5116796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459029/normal_5fc363add6950.pdfIn PDF document text
    • https://cdn.sqhk.co/muzexeragod/ghFWDq7/xotusovoxanusapovadilug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a6afb6bf-fcb2-4c05-818e-a8486e59d1d1/54101392613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/580e0ca1-ef98-4ae3-8af0-bd86429fb51f/tecmo_bowl_game_online.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/nelakek.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/watefosixigaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b62ab961-ac41-4c79-b912-8a7b47815668/88563832726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fdd13af-ffb1-408b-bc95-7934ba69b172/77237837295.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD962 4780 bytes
SHA-256: aef4977a4855db2370902802f7ca7aa65f44cddf548d613cefdcc2bef54bc16c
font_01_sfnt_off0000e96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96F 10792 bytes
SHA-256: 58e42ef5d06d4550eb96f6bdef61126d4ffec3d3f76e327215d3ee8dd52266aa
font_02_sfnt_off00010e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E56 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f