Malicious PDF — malware analysis report

Static analysis result for SHA-256 cecd1eda8c07473d…

MALICIOUS

PDF

79.1 KB Created: 2021-01-17 12:35:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2c54b7ffaa38d185005d2d1c3e7610f0 SHA-1: 08e4631e0abfa578b9c85772e6998b54ee386be0 SHA-256: cecd1eda8c07473dc194e9880e7935b6a80d64ccd32874e690e0d968b1f07bde
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though partially corrupted, suggests a lure related to media content, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=bakemonogatari+episode+1 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426279/normal_5ff5a2dd03568.pdfIn PDF document text
    • http://wutomomar.22web.org/misekoziwakigejexowoke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453729/normal_5fec2ac028a2c.pdfIn PDF document text
    • https://cdn.sqhk.co/zesunotu/IMRejep/knight_rider_2008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5fc20b1f89618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385198/normal_5fc10704dd1a0.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutazomaga/hayibTY/pilamebab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367925/normal_6002f97219a49.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/aHhe3gi/usa_bmx_balance_bike.pdfIn PDF document text
    • https://vunatoja.weebly.com/uploads/1/3/0/7/130738644/927200.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tatasuvuputo.epizy.com/chess_titans_windows_7_microsoft.pdfIn PDF document text
    • http://zukisofom.epizy.com/ekonomiks_grade_9_module_answer_key.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_off0000e5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E1 5512 bytes
SHA-256: 711f601336b577f2c443878dc32f59b8ebedbd8ca434f9ed456668394f2cac4b
font_01_sfnt_off0000f901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF901 5412 bytes
SHA-256: 4a53afcd48196a96f85f414cb5b3542724116e0d9f60fff7d799f9f2eb9fe1cf
font_02_sfnt_off00010b5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5A 10648 bytes
SHA-256: f79b2ed81f66c566a865c8c30579c056607578ae2313286f5c0499b95c1a1edf