Malicious PDF — malware analysis report

Static analysis result for SHA-256 b42588e4596674a9…

MALICIOUS

PDF

47.7 KB Created: 2020-08-03 02:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be44a0aac81e3d488f3fa6d74717b07b SHA-1: a86afecd7dd29b871f295ebcb66f17ebdb0dc1a7 SHA-256: b42588e4596674a9beeb4e578712273f57460587ad3a597c8e6e97afd992675f
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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and other benign-looking URLs, suggesting a lure to a malicious site. The primary attack vector appears to be directing users to a malicious redirector.

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=kodi+on+samsung+smart+tv
    • http://files.huttvalleysingers.org.nz/uploads/1/3/2/7/132740665/mudipiboxozuweb.pdf
    • http://files.jadefernandes.com/uploads/1/3/2/7/132741555/3618295.pdf
    • http://files.niwotcounseling.com/uploads/1/3/1/6/131606546/e3cb3d2a64399a.pdf
    • http://files.brandito.net/uploads/1/3/0/8/130814411/9346215.pdf
    • http://files.h-dmanagement.com/uploads/1/3/0/7/130775085/fevir_kejufebimenisa_zijiluledipo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6248/4383/files/logosolol.pdf
    • https://cdn.shopify.com/s/files/1/0428/4094/8892/files/david_icke_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/76421279202.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/rujuzagakidepewuli.pdf
    • https://cdn.shopify.com/s/files/1/0432/9704/6696/files/41797925924.pdf
    • https://cdn.shopify.com/s/files/1/0437/2050/7546/files/xuwilugamama.pdf
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/jaxubobuduputegasewekuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/14578602780.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/51590378252.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/59260186188.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/59264094414.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/cat_416_backhoe.pdf
    • https://cdn.shopify.com/s/files/1/0435/3074/8055/files/vimofutiwasufu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zamujogeve.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/sejifekolamavilid.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_off00007043.bin
7039062150ae19fd70a76384f058557727229a551d9a6aec3a1f723b361874ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7043 4904 bytes
font_01_sfnt_off000080db.bin
3c8e8b8cf569a9996d1963506188a08e322e3839cd2da99b72790df16b1bfb77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80DB 10004 bytes
font_02_sfnt_off0000a314.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA314 4324 bytes

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