Malicious PDF — malware analysis report

Static analysis result for SHA-256 22f1fdc789ffc8b7…

MALICIOUS

PDF

32.9 KB Created: 2020-08-01 16:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59244483b3f968aa41d461be20a2a97b SHA-1: 81823a2626a3baf8eb02cd350b06385777a78c9b SHA-256: 22f1fdc789ffc8b7345c0f66f2cc02da1afad6b1f2724b8bfc9616b92226ee77
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to shopify.com domains hosting other PDFs, suggesting a link farm designed for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body contains the text 'My inmortal sheet music', which is likely a lure to entice users to click the links.

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.cc/pify?keyword=my+inmortal+sheet+music
    • http://files.christopherkerrayer.com/uploads/1/3/2/8/132816036/jizozeselodel_majipinav_gaxotugomivovi_xafizuvewiv.pdf
    • http://files.loricesbeautyplace.com/uploads/1/3/1/3/131383383/7839454.pdf
    • http://files.athenspassportmagazine.com/uploads/1/3/0/8/130873717/1595525.pdf
    • http://files.kmgartistry.com/uploads/1/3/1/4/131408798/9371822.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/23559630033.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/tisizavokevatawus.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/67451355966.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/rerufomivo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/37119501375.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kovogosiwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6667/8686/files/52360732864.pdf
    • https://cdn.shopify.com/s/files/1/0440/6280/2070/files/juvaxim.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/mifebelulikanugokudefu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5261/1222/files/88596335426.pdf
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/79877613296.pdf
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/44459002257.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_off000046a0.bin
f3306c2b622c2a9d577c37e30e2bf81b2c31928e9a6480ab27aa3cf39ab2bd13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46A0 5148 bytes
font_01_sfnt_off00005800.bin
521936d82c984949ca726c02a5db47f6284a1c78fe1da8b850867b0aac9ec426		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5800 9020 bytes

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