Malicious PDF — malware analysis report

Static analysis result for SHA-256 32129a6ebbdfbd4e…

MALICIOUS

PDF

67.0 KB Created: 2020-08-18 17:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32078398c3f84bdad0ceba166f5d0408 SHA-1: 31f1ec63e78951cf660ce752e12050111fe77aa0 SHA-256: 32129a6ebbdfbd4eb62e6ff64ba198b38d6248112c4cb9347bc6d58a372cc8e2
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with multiple embedded links, one of which is 'cdn.shopify.com/s/files/1/0427/4513/5260/files/pudel.pdf'. The document body, though heavily obfuscated, contains the malicious URL. The combination of these factors strongly suggests a phishing or malware distribution attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=guidelines+for+blood+transfusion
    • http://rimoku.kindracrick.com/uploads/1/3/0/7/130776031/5149b673.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/pudel.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/36966909262.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/dalipifosedixatijimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/french_orthography.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/50354561591.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/20388285622.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/57337452186.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jazaw.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_off0000c62e.bin
5bceaaa19c336eb9cdb5b75a8a3c2b68ba8f78fa70204f072dbfe5d6f09674fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xC62E 5072 bytes
font_01_sfnt_off0000d771.bin
160da9775d9c668bb8159cee9966bab3ae13ea74ddc58d882ddfa1b918c5ddb2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD771 12416 bytes