Malicious PDF — malware analysis report

Static analysis result for SHA-256 3877c1d0474eeb0a…

MALICIOUS

PDF

39.1 KB Created: 2020-08-25 09:42:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03bf30e51a7385f80beb02f81b5af9fc SHA-1: a38e5d9630e659d57e19047ad68bb6987d8b6cc6 SHA-256: 3877c1d0474eeb0a8ab8b22ee1e3687bb7a9be2b83cca58409d34a9587d8544d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc' with a lure related to a 'bullet force laptop'. This indicates a likely phishing or malware distribution attempt. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious redirector and the lure strongly suggest the document's purpose is to lead the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bullet+force++laptop
    • http://files.olddonationband.com/uploads/1/3/0/8/130814430/garowagoxuvut.pdf
    • http://files.stuartjmurphy.com/uploads/1/3/0/7/130775228/serobewijun.pdf
    • http://rupig.fromtherib.org/uploads/1/3/0/8/130814769/8418443.pdf
    • http://gosoxerad.sevinjanephotography.com/uploads/1/3/0/8/130874104/4dc55.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tivaluzisezulumavolo.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/46280718566.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/38417548939.pdf
    • https://cdn.shopify.com/s/files/1/0431/3340/3285/files/world_of_warcraft_rpg_monster_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/42100110191.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/bokevete.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/xifilejulologowagaroga.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/kawasaki_z125_pro_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/4263/3890/files/aisatsana_aphex_twin_sheet_music.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_off00005ccd.bin
6822f6b2dcaed2de5560bd29e2eb22bb349a01441c5d32e2865b50bb17f88446		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCD 4880 bytes
font_01_sfnt_off00006d7d.bin
e0e2e15c2abf4b535e61d57a22a37cca29a6952f1774956e6f6616832707820b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7D 10096 bytes

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