Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cf3d4459d8b2f56…

MALICIOUS

PDF

86.9 KB Created: 2020-08-22 17:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ea708c05a8eb9c516d45a8340cd54d9 SHA-1: 01588c640d9511d63ffa7aeb9237f6c8cc7f4d5d SHA-256: 8cf3d4459d8b2f5628ee86bb465f1c0f6c96db867632a72d4c772e60cd91b966
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with at least one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain the URL 'https://ttraff.ru/pify?keyword=eric+garner+autopsy+report', suggesting a lure to external malicious content. The presence of multiple Shopify links, some confirmed benign and others unknown, indicates a link farm strategy. The primary attack vector is likely social engineering via the embedded links.

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=eric+garner+autopsy+report
    • http://files.twisteddreamsff.com/uploads/1/3/0/7/130740221/4850761.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49470024852.pdf
    • https://cdn.shopify.com/s/files/1/0460/2632/6175/files/search_object_games_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/wenefuxejuwurotidikigewup.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/file_khng_in_c_2_mt.pdf
    • https://cdn.shopify.com/s/files/1/0437/2480/0151/files/stout_halfling_5e.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/moxinuwopipomuzu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2036/0600/files/giguminevumakozunovibor.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/zevotapeza.pdf
    • https://cdn.shopify.com/s/files/1/0437/9354/7426/files/simple_risk_management_plan_template_excel.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/kizeguxabefokamifemizi.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_off00010b4b.bin
270820ab0b789fd0ce59ebf0f464379d3a58c39f18ba703ab6d19eeb1362ab86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4B 5012 bytes
font_01_sfnt_off00011c68.bin
f54b55f85218135a3aef1a2552a1722bf37074427385a3097188c15044d5b769		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C68 10628 bytes
font_02_sfnt_off000140d0.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140D0 4324 bytes

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