Malicious PDF — malware analysis report

Static analysis result for SHA-256 f61e7834a5dbf78d…

MALICIOUS

PDF

64.2 KB Created: 2020-08-02 16:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a85566922da8c34b1e9d09b912ac253f SHA-1: 1e118386863e5ae1f5a599b1e1f7cf2d5bc6d7ae SHA-256: f61e7834a5dbf78da32de072c74a55a1298a1761dd14d89b92b24a24f8d4f7af
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious due to a high concentration of external links, many pointing to a redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=pest+control+world+osrs', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites.

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=pest+control+world+osrs
    • http://files.daleinglett.com/uploads/1/3/2/6/132682076/wadasim.pdf
    • http://files.jmcillustration.com/uploads/1/3/0/9/130969346/wofotigajudenif.pdf
    • http://files.stmaryselmbridge.org/uploads/1/3/2/3/132303102/e262a671a03cdd.pdf
    • http://files.divinesoulenergy.com/uploads/1/3/0/9/130969819/d55ccdadbe3c.pdf
    • http://files.louisianacure.org/uploads/1/3/1/1/131164067/mazolabo-zizekadavimubej-xiberodavu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2958/4282/files/bogigizivuvogizufawowopen.pdf
    • https://cdn.shopify.com/s/files/1/0435/9441/6290/files/jigamakitizokepubam.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/96301961512.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6069/files/how_to_install_forge_mods.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/50475408326.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/vajekalesebusogivaboli.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/poseteroxilu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sogogetuxupoxex.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2858/files/34138602349.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/68175367629.pdf
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/17909326455.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2111/files/bukuviroxopuv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a34b.bin
0e038cee082377950647e022053f4e8ea9c4e93e23f48d8f83269b137cca9836
pdf-font-stream PDF embedded font (sfnt) at offset 0xA34B 4816 bytes
font_01_sfnt_off0000b3d1.bin
1b2fe2f94e3c215f264826f014c3ad6502e4d1cd1c7091646b53fc056c7acc9a
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D1 13548 bytes
font_02_sfnt_off0000deda.bin
5fdab163fd68a7716b276a6c43761c75cba4b48e5aa5315e2f8f747c0e0bfec5
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDA 16100 bytes