Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa190850c808a7b2…

MALICIOUS

PDF

61.4 KB Created: 2020-08-15 02:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fea359cfa34329fe92a2e1071772030c SHA-1: 767266cdb4803f542083237810f92b96cae40545 SHA-256: aa190850c808a7b2da76bc151a00804daea6fc213e1b37b655aeb0de8168e741
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure at https://ttraff.com/pify?keyword=2012+holden+barina+workshop+manual. Another critical heuristic identified a PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious links. The document body, though partially corrupted, contains text related to a '2012 holden barina workshop manual', likely a lure to entice users to click the malicious link.

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=2012+holden+barina+workshop+manual
    • http://files.seancotton.com/uploads/1/3/2/7/132741302/rimejefar-jalesunapiwigej-xiwolumaj.pdf
    • http://files.tachelesstmk.org/uploads/1/3/1/4/131453005/1008030.pdf
    • https://cdn.shopify.com/s/files/1/0429/3702/4668/files/88960870920.pdf
    • https://cdn.shopify.com/s/files/1/0431/5316/2394/files/96928848858.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/79994893075.pdf
    • https://cdn.shopify.com/s/files/1/0431/7288/8742/files/fender_m80_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/1958/2110/files/josujipadugotidipidu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6026/files/50394575244.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/dusidarosoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7606/6211/files/60359913329.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/awakening_the_heroes_within_carol_pearson.pdf
    • https://cdn.shopify.com/s/files/1/0430/5233/5255/files/rexiseremogaxakuzipak.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_off0000a394.bin
44fa1621dbe7bb600e356b61ed25a9cb798920045b55080c0919cc6bf652fa94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA394 5528 bytes
font_01_sfnt_off0000b61f.bin
6b6e807823fd944ee833ca58986b6cf89b013458003a07959d9867d77625bbc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB61F 10724 bytes
font_02_sfnt_off0000dacc.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDACC 4324 bytes

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