Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb364c1a65efa38c…

MALICIOUS

PDF

40.4 KB Created: 2020-08-19 04:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 652485d4fc9a8719df1cda4131444734 SHA-1: ea5573703d13bba4013945589d388bc6ab310340 SHA-256: cb364c1a65efa38c82144a1cf36e341ee1ce523e533808a60231ecf44cf9b3f2
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body and heuristics indicate a lure related to payment or bank details, directing users to 'https://ttraff.ru/pify?keyword=e+p+f+ki+full+form'. This suggests a phishing or credential harvesting attempt. The presence of numerous external links, including to shopify.com, points to a link farm strategy to obscure the malicious destination.

Heuristics 4

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=e+p+f+ki+full+form
    • http://files.serendipityhippie.com/uploads/1/3/0/7/130776822/ditibutuguwe-jijuliwefubomun.pdf
    • https://cdn.shopify.com/s/files/1/0431/8111/3506/files/louisville_crime_maps.pdf
    • https://cdn.shopify.com/s/files/1/0428/6047/8630/files/attestation_de_formation_modle_word.pdf
    • https://cdn.shopify.com/s/files/1/0431/2947/1130/files/math_symbols_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/26632849613.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2820/files/zizubel.pdf
    • https://cdn.shopify.com/s/files/1/0434/8782/1984/files/tivetuvabivusezarud.pdf
    • https://cdn.shopify.com/s/files/1/0438/8444/5864/files/43905201106.pdf
    • https://cdn.shopify.com/s/files/1/0434/3005/2007/files/michael_porter_l_avantage_concurrentiel.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/70571545985.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/zamigeneguxolurawar.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_off00006296.bin
1896f43c20ef399faa1194af27bb3a86f9429b89566a0723cb2a09df68c8ec5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6296 4680 bytes
font_01_sfnt_off0000726d.bin
99a213e724ebc6c6db1b04de27a8e1c096366535d0f79c4e7db1055f2c0dd36a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726D 10244 bytes

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