Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f2a675482ae13db…

MALICIOUS

PDF

44.3 KB Created: 2020-08-10 13:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eb015a7d53da79190f6f9c14d8e8c9b SHA-1: b2f5ec442cf6b6bfdfb439e59d4eef1adee9a32a SHA-256: 4f2a675482ae13db450702fdaf16f9907be08398fd15de7c91b7c6098a3cddf5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Attestation d h\u00e9bergement pdf a imprimer' and references wkhtmltopdf, suggesting a lure to download further content. The presence of a link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, sites.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.com/pify?keyword=attestation+d+h%25C3%25A9bergement+pdf+a+imprimer
    • http://nirorem.eastmen.eu/uploads/1/3/2/8/132814930/5822863.pdf
    • http://files.feathersmediums.co.uk/uploads/1/3/1/8/131856567/5d953203538c6.pdf
    • http://files.annasalimon.com/uploads/1/3/0/9/130968984/2504653.pdf
    • http://files.livepurebodycare.com/uploads/1/3/1/3/131380847/9315040.pdf
    • http://files.purplewax.com/uploads/1/3/0/8/130874544/7618596.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/fupubepurotasojese.pdf
    • https://cdn.shopify.com/s/files/1/0440/4684/4054/files/22163060228.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4637/files/11900963807.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/xosox.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/buwovuwedib.pdf
    • https://cdn.shopify.com/s/files/1/0438/8660/8552/files/latar_belakang_agama_buddha.pdf
    • https://cdn.shopify.com/s/files/1/0430/2887/3367/files/seworasajatubo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/dajabafujovubaxaji.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/piwuxusevusodute.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/palizipubesuponagaja.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5286/files/22211735593.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c43.bin
1ca17220e98cdc6f0ff9f5fca4874724901803982ecf960096e6a74e92d36795		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C43 5692 bytes
font_01_sfnt_off00007f2a.bin
6ecc8417cb7812dd98c301708d8c0b076ff9be669a75e4a4cee22961693026ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2A 11272 bytes

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