Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f2b1d7a0581de1…

MALICIOUS

PDF

53.5 KB Created: 2020-08-04 19:17:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 650eefe0681634a2ba4e884c0f3fccbc SHA-1: 75c7edacda2a937a80c7f9fa1f0180cfcc726bb8 SHA-256: f0f2b1d7a0581de13cc0613730fd90c232fab3584d599250abd0dca481811b2b
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector URL, indicating an attempt to direct users to harmful content. The document body, though heavily obfuscated, contains text related to books and the redirector URL, suggesting a lure. The primary malicious URL identified is ttraff.ru, which is known for redirecting to malicious sites.

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=books+every+high+school+student+should+read+before+college+pdf
    • http://files.mwilkinson91.com/uploads/1/3/2/6/132695569/wosotiv.pdf
    • http://files.infraredheadart.com/uploads/1/3/1/4/131453144/5629298.pdf
    • http://files.chouseresearch.com/uploads/1/3/0/7/130739833/fepilete.pdf
    • http://files.commercial-doors.co.uk/uploads/1/3/0/9/130969971/jevovutel.pdf
    • http://files.sunflowercottonwoodpto.com/uploads/1/3/1/3/131381066/ab35dae1857a2e.pdf
    • https://cdn.shopify.com/s/files/1/0431/0728/7189/files/gawedofemapikazuluriva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0440/0673/6037/files/60657514484.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/13065706744.pdf
    • https://cdn.shopify.com/s/files/1/0431/2632/5409/files/91594024802.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/34377748694.pdf
    • https://cdn.shopify.com/s/files/1/0433/9521/9623/files/lalukufof.pdf
    • https://cdn.shopify.com/s/files/1/0434/3001/9229/files/didid.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/jukozedak.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/sominugelujatabe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/sorinifulodiviwiguwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/11036720893.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/57477865452.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_off000091d2.bin
0127323e1f5a2e503403e6aa32b5715fc900abf979d730a8fe92c3a231ecb407		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91D2 5832 bytes
font_01_sfnt_off0000a5bc.bin
1214ee0c931782d72e85761cdb40e848ea31ab90c05939642e0e17670e9ab24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5BC 10088 bytes

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