Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da1dc0f3695e51b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-06 09:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a32a0198acccc74f444fe1d8eee96c76 SHA-1: 84b22afbc0f1c0617e3422eb301d19f13dacec5f SHA-256: 7da1dc0f3695e51beeaa5f59f2dc44ec012a24b5652336e7c6d3fd3d9fe32337
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is disguised as a "collateral management guide pdf". This link, when clicked, directs the user to the ttraff.com domain, which is flagged as malicious. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. The presence of numerous other PDF links suggests a link farm tactic, likely to obscure the primary malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=collateral+management+guide+pdf
    • http://files.flipflopfantasy.ca/uploads/1/3/1/3/131380342/6800550.pdf
    • http://files.cutiedokicakes.com/uploads/1/3/0/9/130969562/7082685e666001f.pdf
    • http://files.nickhupton.com/uploads/1/3/0/7/130739470/7e0cfd4eb1.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/presentation_skills_body_language.pdf
    • https://cdn.shopify.com/s/files/1/0428/3331/3958/files/4238489772.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6689/files/63310150221.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/21783216454.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/molecular_biology_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/60101091539.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/tukar.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/73374685995.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/gubeguwivubilolijilag.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9759/files/liridule.pdf
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/car_insurance_certificate.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_off0000625f.bin
bbea88494f7ef74ca998423fdf97250c0cb53ee7f676ed48369921b723086f1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x625F 5088 bytes
font_01_sfnt_off00007397.bin
383fb561e7c6b8b59aaaf8b405dc9648264bc636bcc1ae4e1f74109827e4d9b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7397 10308 bytes

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