Malicious PDF — malware analysis report

Static analysis result for SHA-256 94ca3bb8c8dd185c…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 02:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d5548a5c25a65b4f23397592a685292 SHA-1: 6629cfa6fb17c1fdd6be954794b745c69e8dfe08 SHA-256: 94ca3bb8c8dd185c15f7c05a56eac7cd89b24da87208c6e5b9668ec451a37bf3
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. This suggests a tactic to drive traffic to malicious sites, potentially for phishing or malware distribution. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking PDF links, reinforcing the link farm strategy.

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=base+coc+th+9
    • http://fiwiledun.calvary4you.com/uploads/1/3/0/7/130775380/fopat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/94180919217.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/83027876939.pdf
    • https://cdn.shopify.com/s/files/1/0438/0537/6669/files/kesorafuzataf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4501/1112/files/formation_adjointe_administrative_virtuelle.pdf
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/baazigar_film_song_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0432/2030/4034/files/promissory_note_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0428/8453/0343/files/cdisc_adam_implementation_guide_version_1._1.pdf
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/quest_list_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/38143746710.pdf
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/silazuvesana.pdf
    • https://cdn.shopify.com/s/files/1/0429/1464/4127/files/21163886079.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/
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006381.bin
b26b48be8f72a6206e6b12e66cd69c47b445dcd014f766e617f88ee20b3df926		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 4964 bytes
font_01_sfnt_off00007453.bin
f71db00dcbac88de2ecc447ec3e02d7974dae97ca1022968b3cf266266bd1c85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7453 10136 bytes

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