Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2b6fa228bf41bc…

MALICIOUS

PDF

45.0 KB Created: 2020-08-15 01:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 770cf92b4c77d8a2ad4b5fee46aa88d2 SHA-1: f3b4a1cf8f4c289cd7b5811e5ce0e6475a15d77f SHA-256: 7a2b6fa228bf41bc9664272a397fad993bd47770fba89300aefc11bdb05980a4
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'stop the bleed training pdf' and the URL itself, suggesting a lure. The presence of multiple PDF links, including one to a malicious redirector, indicates an attempt to drive traffic to malicious sites, potentially for further exploitation or phishing. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the embedded URL.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wb?keyword=stop%20the%20bleed%20training%20pdf
    • http://wafasavov.yavmagazine.com/uploads/1/3/1/1/131164250/nipoxaropatek.pdf
    • http://jezidekix.stmaryschurchbrighton.org.uk/uploads/1/3/1/4/131438641/wezaw.pdf
    • http://fekuf.quantelab.org/uploads/1/3/0/7/130739561/5750438.pdf
    • http://files.libertymerchandise.org/uploads/1/3/1/4/131453541/04af9172cb18dd.pdf
    • https://cdn.shopify.com/s/files/1/0429/3050/3843/files/86473864020.pdf
    • https://cdn.shopify.com/s/files/1/0438/2405/4429/files/wakowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7339/6133/files/aswath_damodaran_corporate_finance_theory_and_practice.pdf
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/7185384328.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/foundations_of_college_chemistry_14th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0449/9944/2590/files/lukan_authorship_of_hebrews.pdf
    • https://cdn.shopify.com/s/files/1/0428/4062/1222/files/becky_g_can_t_stop_dancing_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/60568944006.pdf
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/44395854417.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_off00006c7d.bin
ac54eebffc7301b778aa8581be3791665659594348d5ae020dd10969ae6f7160
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7D 5368 bytes
font_01_sfnt_off00007ead.bin
167976018fa526f524e0dfd6fac0c0efd33b8e0212191c2897687b4669ac8760
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAD 11496 bytes