Malicious PDF — malware analysis report

Static analysis result for SHA-256 55668ca41007c697…

MALICIOUS

PDF

44.0 KB Created: 2020-08-05 10:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5722d169ac1adf16a795c9a9f2eab82d SHA-1: 66f86b732a2e8d1ecbf64ad35f5447e4ad550149 SHA-256: 55668ca41007c697942baf2487a0a9b9f0ce4ac0e483adf9432f4d00ba1ab6fa
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=law+department+manual+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains references to 'law department manual pdf' and the malicious URL, suggesting a lure to a malicious site.

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=law+department+manual+pdf
    • http://files.germanimmersionprogram.com/uploads/1/3/1/4/131453005/funakazajuf.pdf
    • http://files.dittmarfarms.com/uploads/1/3/0/8/130813846/zugogisemofavexofi.pdf
    • http://files.ranchosandiegopopwarner.com/uploads/1/3/1/4/131412235/1994b7bb7e746c2.pdf
    • http://files.fustlerthefemalehustler.com/uploads/1/3/0/7/130739839/gaxiwoloxakutenuboj.pdf
    • https://cdn.shopify.com/s/files/1/0440/9150/6840/files/41333592076.pdf
    • https://cdn.shopify.com/s/files/1/0440/2790/4165/files/abaqus_cae_user_s_manual_6._13.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/nitiko.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/gupivalowolafudepa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/40k_adeptus_custodes_codex.pdf
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/73284038197.pdf
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/59184658978.pdf
    • https://cdn.shopify.com/s/files/1/0437/3171/4199/files/786452230.pdf
    • https://cdn.shopify.com/s/files/1/0434/6350/8121/files/79756562248.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/lowesinitivagerafuvebeji.pdf
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/75660837217.pdf
    • https://cdn.shopify.com/s/files/1/0436/4831/9638/files/4954712779.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/18636044776.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sesolofulazige.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_off00006ff1.bin
8f474fda573a508f49df604f8f9f239d452158127c83841f51d9a2c02fda258c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 5044 bytes
font_01_sfnt_off0000811e.bin
c1892596f63591d93f70083b930995af303ec0c9f7c20eb9baf01d111ad03de1
pdf-font-stream PDF embedded font (sfnt) at offset 0x811E 9976 bytes