Malicious PDF — malware analysis report

Static analysis result for SHA-256 a10e2f9fc5ce2188…

MALICIOUS

PDF

40.0 KB Created: 2020-08-22 09:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c02752d5d8e283ecc492dc870ff5f860 SHA-1: 48a84db72e0300142a8a8536cfa5dc81e8103627 SHA-256: a10e2f9fc5ce218879de00160f1eb4512406034ba109b3b3d4a1d8b572277187
150 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'inventory report in sap', suggesting a lure. The presence of a PDF link farm heuristic further indicates malicious intent to distribute links. The primary attack pattern involves redirecting the user to malicious infrastructure via the 'ttraff.ru' URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=inventory+report+in+sap
    • http://files.littlesoulyoga.com/uploads/1/3/1/8/131856039/22085885a0.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/28273336198.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/bejirewusedom.pdf
    • https://cdn.shopify.com/s/files/1/0435/3723/6119/files/24665035310.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/39692769068.pdf
    • https://cdn.shopify.com/s/files/1/0438/9509/5464/files/estrategia_competitiva.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/kuloguzu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4276/5991/files/bubarogomobisowarasesof.pdf
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/xevepadujinewafemogoninag.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/descargar_libros_budismo_zen_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/3349/3655/files/sexazomorirusovudap.pdf
    • https://cdn.shopify.com/s/files/1/0434/4233/9992/files/ramab.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/jatotaxagafana.pdf
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/rajidalofumokax.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_off00005eb4.bin
618d724585a860ad62a9c9ecb371db2b1e18654767a2f79d92964e452f28c76f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB4 4880 bytes
font_01_sfnt_off00006f61.bin
a454bef29d88b2bb3fa5231ec461afb7fc74a29dd892b11d353ec1c47ac16ebf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F61 10624 bytes

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