Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3e4e2219a3aa33…

MALICIOUS

PDF

38.3 KB Created: 2020-09-19 02:26:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64f083365505aa3ee1caad1c43c98d37 SHA-1: 3a307e92e571e226599516354797849a4edb07e8 SHA-256: 9e3e4e2219a3aa336ecde1974e670811c28b27a2e9768c9bc245feb1163f7463
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.me, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and appears to be generated by wkhtmltopdf, suggesting it was programmatically created to host this malicious link. The presence of a link farm heuristic further indicates a malicious intent to distribute links.

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.me/wix?keyword=wild+west+new+frontier+tips
    • https://9d36fdb3-cf37-4cbd-84eb-5758076200b1.filesusr.com/ugd/a4d998_ea944bbc01a24deba5125e0009929993.pdf?index=true
    • https://00811347-8a3d-4afe-9563-e5feac323647.filesusr.com/ugd/0cd019_bc28e9982a0e445ab44c21a20c50d941.pdf?index=true
    • https://7c21fdce-d500-46ad-b25e-720fdf7b8ec4.filesusr.com/ugd/1fa6dd_a6f1cd155f1f4bd18b0a0d9c6009d7fe.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0444/2678/9030/files/thoracic_back_pain_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/koxajewepomabepejajero.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/salufatujuses.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/kawaxepeso.pdf
    • https://cdn.shopify.com/s/files/1/0434/7199/5030/files/43428447038.pdf
    • https://cdn.shopify.com/s/files/1/0431/6141/9927/files/86889906413.pdf
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/fit_girls_guide_28_day_jumpstart.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/40674739357.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/66773773926.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_off000059f0.bin
db0c3febee387f65227b7d0bfbee089b9f007c8ef50fa687b2480cbf0e74253b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F0 4928 bytes
font_01_sfnt_off00006ae0.bin
01d5ed17a5558688fad1a4267910cbf75872648130b1d4bba17df5894bcdf7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE0 9916 bytes

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