Malicious PDF — malware analysis report

Static analysis result for SHA-256 24db39171598394e…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 23:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ab403ba8514f26f953c9c02016426a6 SHA-1: 8c8a54b43db3ad8c6dfc9fc8502a68ac0b863cb8 SHA-256: 24db39171598394ec1c096554a9eb545980d6d094cea5494b138e73639ea383b
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search engine results, directing users to a malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the search query "Chariots of fire instrumental free" and the malicious URL, indicating a lure to a potentially harmful site. The presence of numerous PDF links, many hosted on Shopify, suggests a tactic to obscure the final malicious destination.

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=chariots+of+fire+instrumental++free
    • http://wepusegi.sp-arms.com/uploads/1/3/1/4/131453718/jefojowatinizi_vojifizas_zizawofelilebad.pdf
    • http://files.kcorbinfocus.com/uploads/1/3/0/8/130873758/feramowigutigonoxib.pdf
    • http://files.irishmilersclub.org/uploads/1/3/1/3/131381237/bosumi_mifuz_vepapo.pdf
    • http://dabivamob.suzannemariebeauty.net/uploads/1/3/1/6/131636725/5324187.pdf
    • https://cdn.shopify.com/s/files/1/0450/3266/9334/files/bethanechol_davis_drug_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/mitegozudesebuvotujedivag.pdf
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/sunitubagekamed.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/vosexibebibe.pdf
    • https://cdn.shopify.com/s/files/1/0429/3220/7782/files/gmat_verbal_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/beres_hammond_albums.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/40048504628.pdf
    • https://cdn.shopify.com/s/files/1/0444/0604/6886/files/c_create.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/89524384571.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ea2.bin
2afffec555518e225998e9567e3f1ff5bcb0109a7ccca6fa543e4977a7fd8e0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA2 4912 bytes
font_01_sfnt_off00006f27.bin
3f9c7135fb9471b1cd1fe7cae6e033083d0323268fc3ae289e09e68348b4b614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F27 10376 bytes
font_02_sfnt_off000092bb.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92BB 4324 bytes

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