Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be8639e802b30ca…

MALICIOUS

PDF

44.1 KB Created: 2020-08-03 22:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fea2248304c69e4645cd99305f6419c5 SHA-1: b9f1c65d4076c1c22958f12d4cbc035666a2fc05 SHA-256: 2be8639e802b30ca551008a85a187087d96a252dda58d07166018fb790a87ce8
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely the primary malicious payload delivery mechanism. The document body itself is heavily obfuscated and contains the malicious URL, suggesting a social engineering lure to encourage users to click the 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.ru/pify?keyword=excel+formulas+with+examples+in+excel+sheet+pdf
    • http://files.kennylakehawks.com/uploads/1/3/1/3/131380627/9454917.pdf
    • http://files.simixlaundrydetergent.com/uploads/1/3/1/6/131606965/tojigupaxikiramimur.pdf
    • http://files.sapulpahistory.org/uploads/1/3/2/3/132302913/8014213.pdf
    • http://files.donandmargieabroard.com/uploads/1/3/1/0/131071076/f2b818fc74ed0.pdf
    • http://files.strotherlab.ca/uploads/1/3/1/8/131856860/zewopejunumogotobom.pdf
    • https://cdn.shopify.com/s/files/1/0428/8810/2051/files/skyrim_werewolf_controls.pdf
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/microbiology_a_laboratory_manual_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/rotoforo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/68118907934.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/25412773862.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/93889653765.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/pefagefitetuvuxuvigafa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0999/files/60848434897.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/57252062456.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/bugotopepanirovekesi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/cool_math_clicker_heroes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/70505268915.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_off00006b79.bin
600c04d4ea5fa8bc45d1bd73b6cd1850cb03f9d36764ab9dd207cd310f2c31dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B79 5512 bytes
font_01_sfnt_off00007e22.bin
aa3d82d49558c29ccd057bc965eba297cc5742cb0794159ca56f50fb9942aff5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E22 10784 bytes