Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e37a4bae12f8e8e…

MALICIOUS

PDF

42.7 KB Created: 2020-08-28 01:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c9ad66f97b6ad2dbe1592afaac6930b SHA-1: 55ada210a55176e4ce5038ac1571fff4b2be3699 SHA-256: 9e37a4bae12f8e8e2155a0ac31460b91fb67cd23837d87f67e9c427e9dd25e90
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=the+patriot+mp4+movie+download`. The document body, though heavily obfuscated, contains references to movie downloads and the malicious URL, suggesting a lure for users to click the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO or distribute the malicious payload through seemingly benign hosting.

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=the+patriot+mp4+movie+download
    • http://files.endhomelessnessla.org/uploads/1/3/0/9/130969377/1246535.pdf
    • http://files.melodymoonbrooke.com/uploads/1/3/0/7/130739971/narapesedurulis_juvixili_fenukofegefaxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4899/1910/files/california_dmv_permit_test_2018_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/87184210469.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/gexefikalarekibusikeka.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/18355102616.pdf
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/89031896476.pdf
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/sadepoxizunenabekezi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/75650669674.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6041/files/37008783396.pdf
    • https://cdn.shopify.com/s/files/1/0434/7851/5864/files/ravelawenovamivo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/descargar_cymera_apk_para_android.pdf
    • https://cdn.shopify.com/s/files/1/0436/6978/2693/files/73989934091.pdf
    • https://cdn.shopify.com/s/files/1/0436/8600/2843/files/wetusi.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_off000067d2.bin
081ad5a3dc1da40aeaa39cd25f5627edc0dc02c005447accab9e0ad03a818ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D2 5212 bytes
font_01_sfnt_off00007983.bin
38bcac79517e5f0bb6a94dee143052bb9906f76f2fbd3aec0fa67f4148b7bfa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7983 10744 bytes

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