Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0408719968ec028…

MALICIOUS

PDF

48.5 KB Created: 2020-08-21 13:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3c81643dbe15961c31f715f65d400e7 SHA-1: fc245a09d4524189baab4087926c7eead962b222 SHA-256: d0408719968ec0284d5f37529044c2dca88adae74f9fe12ffaacb939fae32990
150 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to domains that host PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=2012+gmc+acadia+navigation+system+manual'. The document body, though heavily obfuscated, contains this same URL, indicating the primary lure is to redirect users to malicious infrastructure. No scripts were extracted, limiting the analysis of further payload delivery.

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=2012+gmc+acadia+navigation+system+manual
    • http://files.gloucesterunitingchurch.org/uploads/1/3/0/7/130775200/keler-sibulakuzeg-begawubakofefex.pdf
    • http://files.tiseopaving.com/uploads/1/3/1/4/131408203/bf6b3c.pdf
    • http://rofotegum.mckeevermountainguiding.com/uploads/1/3/0/9/130969723/328fe3f7.pdf
    • http://files.deevinestudio.com.au/uploads/1/3/0/7/130738882/gozuxokona.pdf
    • http://xuxuwowi.christineomalley.com/uploads/1/3/0/8/130874276/4bcf4f706.pdf
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/buffalo_airstation_whr-_hp-_g54_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/jojemutojilitit.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/15641153792.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/tisepelidejabudixepadato.pdf
    • https://cdn.shopify.com/s/files/1/0429/3053/6614/files/hearts_burst_into_fire_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0459/7006/3520/files/tsc_te_244_barcode_printer_driver.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/xoxaxiganozebedorefipeto.pdf
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/toshiba_hard_drive_drivers.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_off00007fa4.bin
53dd300324d398f2f694600248ecf6f28110ac40000bd8616aec3a5cdcc831a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA4 5556 bytes
font_01_sfnt_off0000927f.bin
7afe23837135174c3d00cc5cdd30c6b179940b82bc29f13a842c26717a390b9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x927F 10192 bytes

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