Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f30ac79ed33e09…

MALICIOUS

PDF

79.3 KB Created: 2020-08-08 06:14:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b0e2e9ce22f894c6165f47785208df6 SHA-1: df4baebec8e66b71dab6cc4b168f094ab410472e SHA-256: e9f30ac79ed33e09811603e344a5aefea2985a29890b6a67a51625c05d35a3fc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=ethnography+research+method+pdf'. The document body, though heavily obfuscated, contains fragments suggesting it is presented as a research paper, likely to entice users to click the malicious link. No scripts were extracted from this sample.

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=ethnography+research+method+pdf
    • http://files.edhgs.com/uploads/1/3/1/4/131408529/lujaremokike_nezuki_derunelizaxeti_kelabij.pdf
    • http://files.peldongaming.com/uploads/1/3/1/6/131606186/dopovowigik-wedeven-suvolopabo-zojugitag.pdf
    • http://files.goldandcharm.com/uploads/1/3/0/8/130874524/6384244.pdf
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/virixejetokaja.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/ruzoboguw.pdf
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/honda_hr_v_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/lefapip.pdf
    • https://cdn.shopify.com/s/files/1/0435/0109/3030/files/91010948928.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nijudesiko.pdf
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/54923431973.pdf
    • https://cdn.shopify.com/s/files/1/0434/6943/9141/files/bikavupo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/tasidunivakimo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/velufi.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_off0000f2e1.bin
a844e18f1eb986fbe48bd3012bdb4eca18b4b5191273c6b130ab767454b32e95		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E1 5596 bytes
font_01_sfnt_off000105d2.bin
ebf84d74153f35006bc65840094ba6fc8c2c1d5ca284272c06b5433e787989a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105D2 13144 bytes

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