Malicious PDF — malware analysis report

Static analysis result for SHA-256 0589a2c84c63decf…

MALICIOUS

PDF

93.4 KB Created: 2021-06-12 16:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d8dcbead5c01b81fdbdd17978af4c85f SHA-1: 6a776e012f7b60d82cb94aebff80db835ffcc568 SHA-256: 0589a2c84c63decf2a785028d8b8b6d7f9ae63d89ee38731ea6a2f7413a572c8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with potentially unwanted or malicious content, disguised with a game reference. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://inwebjor.ru/pbw?utm_term=metal+gear+revengeance+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417214/normal_60590d331941d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495059/normal_600e3127bf7c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484815/normal_602dcaff695fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403685/normal_5fc9bf11cccbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369518/normal_606236a871587.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389801/normal_5ffce5afefb2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369189/normal_6028b3b6df991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495034/normal_60c2893119f24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_60c026d9dc03c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402960/normal_60ba04f182c79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481053/normal_601a5f9b22d92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379046/normal_602b51e35a539.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487897/normal_5fefec6fe8590.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384045/normal_60065602ab40b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427785/normal_5ffc33ac188de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413017/normal_6007e10741fe3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422145/normal_5fce8d04c5d96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376610/normal_605b11de38736.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488349/normal_6050f1165a84a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386621/normal_6032ba352b472.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_6057c67e55ce1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001104f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104F 9076 bytes
SHA-256: 6e4fbe3a8a94d8053f0d39037f00ef10e105dcdbb0b2875c0cb777fbe127e791
font_01_sfnt_off00012df9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DF9 5052 bytes
SHA-256: 655596040d6b1b3af55a4955a69f18ba38cf081971a5d070ad4c4a90b424cea2
font_02_sfnt_off00013f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F58 12472 bytes
SHA-256: 94eff7ba542da24d7738d727c4f014eda1a01c6e0eefae89c386b3c7c08cbcc7

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