Malicious PDF — malware analysis report

Static analysis result for SHA-256 458e9d05c2d43635…

MALICIOUS

PDF

52.8 KB Created: 2020-09-07 22:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b99c81d88f28788adaf36a3f3b7d305 SHA-1: 951e1c32d4a4eb9cdd6e4426773074e7d61953b1 SHA-256: 458e9d05c2d43635bc94326de169be65bb3eb3f90cbc180d523e0dddae0aaa0d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF documents hosted on Shopify, characteristic of a link farm. One of these links, https://ttraff.me/wix?keyword=catalyst+athletics+weightlifting+platform, is identified as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure, potentially for phishing or malware delivery. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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.me/wix?keyword=catalyst+athletics+weightlifting+platform
    • https://cdn.shopify.com/s/files/1/0435/4631/2863/files/naminufuzupotakadepiweba.pdf
    • https://cdn.shopify.com/s/files/1/0432/0991/6576/files/competition_car_aerodynamics_a_practical_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/9643/2021/files/makkar_ielts_reading_book_free_download_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/fundamentals_of_computer_networking_and_internetworking.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1158/files/2505268645.pdf
    • https://static.usrfiles.com/ugd/38bf1f_9df0d351d7644ca1b8c2c82d6ae211c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a04c6800a3d42cba81c15989a73913a.pdf
    • https://static.usrfiles.com/ugd/ecec20_979facbea6ea45ba840420b6db6cd034.pdf
    • https://static.usrfiles.com/ugd/7c30af_a9b4da509f8a4844864f8f379d5040ae.pdf
    • https://static.usrfiles.com/ugd/594ae5_7e79d3ace9b14d19b68f7a194995ca34.pdf
    • https://cdn.shopify.com/s/files/1/0434/4181/5718/files/teviji.pdf
    • https://cdn.shopify.com/s/files/1/0447/9251/2678/files/81293103992.pdf
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/bizawewojebujur.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/lujiwujalidiwababogof.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/glossary_of_prosthodontic_terms_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/caso_clinico_cirrose_hepatica.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/70285387546.pdf
    • https://cdn.shopify.com/s/files/1/0428/3564/0487/files/moziraganipos.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/excel_bestanden_samenvoegen.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_off0000813d.bin
b1c15f91c7851ce9676dd8386a95be7490859b4f91209e1965310df4e0b1f06f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x813D 5436 bytes
font_01_sfnt_off0000939c.bin
d2ed97bdd15ea22d43ac3599ce41219823dd02cbdb92919cd96930b7a5c24a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x939C 10544 bytes
font_02_sfnt_off0000b7b5.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7B5 4324 bytes

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