Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5ffd806e1034f1…

MALICIOUS

PDF

51.4 KB Created: 2020-09-17 01:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41de88109bae717904bc9f128e7a4c28 SHA-1: a958b4d3b315b2053b25a96831549eac528a73b5 SHA-256: 4d5ffd806e1034f191e3e3d434b9b8760313b0a132f5bcc7a78eb495db03cfea
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify-hosted PDFs, which is indicative of a link farm or SEO poisoning tactic. One prominent link, 'https://ttraff.me/wix?keyword=bdo+t4+fairy+skills', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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.me/wix?keyword=bdo+t4+fairy+skills
    • http://files.mountainairdance.com/uploads/1/3/1/3/131382078/fe694ad8.pdf
    • http://tarusoju.inspectnj.net/uploads/1/3/1/4/131410939/webatesafi_zapug_ziromusabate_vedexuva.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/zakoralaxozexigaropilapil.pdf
    • https://cdn.shopify.com/s/files/1/0484/2143/7608/files/mesefalagenasewuwu.pdf
    • https://cdn.shopify.com/s/files/1/0462/5789/7623/files/39690934189.pdf
    • https://cdn.shopify.com/s/files/1/0432/8446/3784/files/kujabogimo.pdf
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/vinolufagijemawunan.pdf
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/jitowujetimudujokelite.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/ben_10_ultimate_alien_game_psp.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/wepix.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/nafevugiju.pdf
    • https://cdn.shopify.com/s/files/1/0437/4619/7653/files/venofipituwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/88185332870.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_off00007566.bin
b9bc7bfc59515ce64032228e2778658f282954a2144f7cd1ad8c265cc5f4ed9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7566 4620 bytes
font_01_sfnt_off0000856f.bin
347eb9a93cb43d573585d27c570ad4846a88ac67e12c85beb4a97e1018e9eda5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x856F 5204 bytes
font_02_sfnt_off0000974c.bin
ba743de955b9b55a2b3b36de3b51077c55b90d62f6dc369ac67eb1a89dc53dbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x974C 13052 bytes

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