Malicious PDF — malware analysis report

Static analysis result for SHA-256 acddd802f04f1ae4…

MALICIOUS

PDF

241.6 KB Created: 2020-11-10 14:22:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 418c0e6ca4a94f3a14130b2ab98d6845 SHA-1: 7bd037d0e879b123257a8fbd5d3bea66e6523362 SHA-256: acddd802f04f1ae4dae860a66e1ca580f3b33ba687bfc22b5fb50f88c7514010
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 phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to host or redirect to malicious content. The document body, though heavily obfuscated, includes keywords related to the embedded URL, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://trafffe.ru/123?keyword=joseph+stalin+accomplishments PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414342/normal_5fa866da82c42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_5fa22724638b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393485/normal_5fa81d6287325.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413363/normal_5fa22c560ce5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389394/normal_5f9a72395c43b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375352/normal_5f9dd6a525333.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_5faa287890b08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411917/normal_5f97357577179.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/kawotexulozax/celebrity_x_scooter_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/pusizusorawafu.pdfIn PDF document text
    • https://s3.amazonaws.com/radaruropivoje/54598263843.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7918645a-4d86-4712-b9e8-1e209de43361/simple_void_world_mod_for_minecraft.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/best_dutch_bros_drinks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16ff0bee-a4e9-467e-8520-f68c63bb3927/dokigimaver.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/48423398869.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/56893685614.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/wozobijozofa.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00034a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A3B 3120 bytes
SHA-256: 016562535695261fa949c20e037b245f776ea9462a3ec0c9e1c8d7b66b64eb05
font_01_sfnt_off0003556e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3556E 5064 bytes
SHA-256: c0fc068f4daa326acb12597f79949b467aa7582d2e72903e982fc13d946136e5
font_02_sfnt_off00036680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36680 17256 bytes
SHA-256: 3ceb14b6d209b6685a8d4a0021cdaa5f52b3ee14c8684baa7febb4800d1f27a9
font_03_sfnt_off000399ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x399EC 17852 bytes
SHA-256: 1159b70c226d3ce8016e37eddf63b171932a33d942e9b8c82586dc941c83b19b

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