Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d317226171354f1…

MALICIOUS

PDF

41.5 KB Created: 2020-08-02 02:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36ff026bdf3a4d41daa19c126eec9425 SHA-1: c0948d1fe442c93f22a8f129562f5a82cec28eb4 SHA-256: 4d317226171354f1eee6d45d97552c55495c78c12b124f8c28b29b55359c85e6
140 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=merge+pdf+mac'. Another critical heuristic identified a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains the same malicious URL and other PDF links, reinforcing the lure. The presence of a callback phishing lure heuristic further suggests a social engineering attempt to trick the user into interacting with malicious content.

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.com/pify?keyword=merge+pdf+mac
    • http://files.njgoldstarfamilymonument.org/uploads/1/3/0/9/130969190/d3eba75.pdf
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.pdf
    • http://files.savethecordfoundation.org/uploads/1/3/1/4/131452958/kisenigubatib.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/tegabaxikumarowoj.pdf
    • https://cdn.shopify.com/s/files/1/0440/3471/9909/files/89928819246.pdf
    • https://cdn.shopify.com/s/files/1/0434/4722/2422/files/negiwupinip.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/26064797600.pdf
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/73121051324.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/naruto_shippuden_opening_15.pdf
    • https://cdn.shopify.com/s/files/1/0428/9524/5475/files/midejo.pdf
    • https://cdn.shopify.com/s/files/1/0439/7747/4206/files/gagunutosowovozi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6901/4165/files/best_blood_pressure_monitor_consumer_reports.pdf
    • https://cdn.shopify.com/s/files/1/0431/4673/9878/files/13748959545.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/nufosozorubera.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/93930247289.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_off00006653.bin
43e3690dfa9834ab82d311f9ab646ef36f8abc108fbc6b622b5e23e43a059f7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6653 5272 bytes
font_01_sfnt_off0000783e.bin
0e971c5620342ab0200c5cd421a69f89c528f91efa6aa072601af562ad5c3f76
pdf-font-stream PDF embedded font (sfnt) at offset 0x783E 9716 bytes