Malicious PDF — malware analysis report

Static analysis result for SHA-256 247b196c15732aaa…

MALICIOUS

PDF

84.4 KB Created: 2020-11-10 08:57:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 257cc31d7c1da32bb68505e226d54194 SHA-1: 3236c8d7dfbd157f1278106a890645ebf2f7670b SHA-256: 247b196c15732aaa8e2febc70334235a995bf76e92870f47659066c47e6e3dab
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a website disguised as a product manual, likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/aws?keyword=samsung+ht+j4100+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393639/normal_5f99d1ffdb73a.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/2ef23.pdfIn PDF document text
    • https://vofixerexelisat.weebly.com/uploads/1/3/4/3/134311693/f3b6b2c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f889c25ce36f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407100/normal_5fa1fee15ee5a.pdfIn PDF document text
    • https://jegotojojenume.weebly.com/uploads/1/3/4/6/134600583/buregadugisobimovove.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/d69f2645-e307-46e6-bb2f-6e9ead0a075d/wonobaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/495e3709-b4e1-46bf-8d6b-a1da014371d4/74051068757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29d81a69-07f9-47f1-8ac9-17ad96110dc8/94699212130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc6b0b41-c153-4bd6-bdd9-76b356bbb212/kodomo_no_jikan_episode_6.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_off0000e697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE697 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off0000f0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D5 5464 bytes
SHA-256: 9335baff2a356efd0c76426b450260f131d9090d608705c9b1ea2bb19f8064de
font_02_sfnt_off00010354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10354 12384 bytes
SHA-256: 14214f4f0805aa939e581226058911b1ce7a208d2915f0f8e99fab625fcf9686
font_03_sfnt_off00012cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CEA 16428 bytes
SHA-256: 984434f05bb978c036d27457b2b179fce185c984665e53f92c0ad04b61f033a6

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