Malicious PDF — malware analysis report

Static analysis result for SHA-256 3333fe2de02465cb…

MALICIOUS

PDF

64.3 KB Created: 2020-08-31 21:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acb8268ce225060cd644af81def95a82 SHA-1: 7760083ba99366642e09286606dbe6746055660a SHA-256: 3333fe2de02465cbe0c26602394b9c3b6c75d5cf8f955e714071b36071d96d48
150 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 'https://ttraff.ru/wix?keyword=shaolin+soccer+full+movie'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure the user to malicious infrastructure.

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.ru/wix?keyword=shaolin+soccer+full+movie
    • https://cdn.shopify.com/s/files/1/0432/7427/2924/files/99595732312.pdf
    • https://cdn.shopify.com/s/files/1/0432/3154/3463/files/non_integrated_accounting_system.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/gubujigubedapusufapi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/51843737712.pdf
    • https://cdn.shopify.com/s/files/1/0436/9560/3865/files/civilization_revolution_2_apk_android_oyun_club.pdf
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/12110849827.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/20140455139.pdf
    • https://static.usrfiles.com/ugd/bfbc46_fc24bafcbd6147d98f5668e4ec170560.pdf
    • https://static.usrfiles.com/ugd/b0cd75_cd86987438af43aba73fe42484aad941.pdf
    • https://static.usrfiles.com/ugd/b8c837_bae251955a4a456ba1c3626bc52b3e68.pdf
    • https://static.usrfiles.com/ugd/3b7182_cd8a7b010b384b399e9c5540c0bd0b7b.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1496/files/lusoxigexinupoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7239/6193/files/fexijepibilajer.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_off00008be2.bin
53a93e0ea3ec73bf7159a799f4089bcc7f047dc8407f382165ca65b25910fd40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE2 15872 bytes
font_01_sfnt_off0000be0d.bin
59b8c63a56717ff7a7e485b9f0febe02afb47abbc89fb3aa473dcfc9f6af841b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE0D 5284 bytes
font_02_sfnt_off0000cfe2.bin
688b24467591dd72c6a916874a76d914db004ae4855b1a9a03f16a7f1d1a416f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE2 10488 bytes

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