Malicious PDF — malware analysis report

Static analysis result for SHA-256 690a58a4061321b0…

MALICIOUS

PDF

39.8 KB Created: 2020-08-07 19:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d9d5ab9adf26acf254b22046ee9f756 SHA-1: 475640fc80a8ae9621b2c58d70deb692ea28c686 SHA-256: 690a58a4061321b0ca3bb6917879bb1c466e60fbd81eb020e781c1d11fc8bce3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The embedded link 'https://ttraff.ru/pify?keyword=new+arbitration+law+uae+pdf' is designed to redirect users to potentially harmful content. The presence of numerous other PDF links suggests an attempt to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/pify?keyword=new+arbitration+law+uae+pdf
    • http://files.cdastars.com/uploads/1/3/2/6/132696233/balifetu_kajogigevodur.pdf
    • http://files.allisonwiserpianist.com/uploads/1/3/0/7/130776755/6547324.pdf
    • http://files.revivalfamily.ca/uploads/1/3/1/6/131636890/rokin.pdf
    • http://lavugivud.sjdalby.com/uploads/1/3/1/4/131453540/888617.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/rulipexelujoraruk.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/wufejorunalilurunuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/zuwageposimedigusegusupag.pdf
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/wabuwobofibokigoda.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/84940993543.pdf
    • https://cdn.shopify.com/s/files/1/0432/6188/6627/files/24701050253.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/99133409357.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/discrete_mathematics_richard_johnsonbaugh.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/21562909172.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1974/files/wotet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/61939151439.pdf
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/2979132901.pdf
    • https://cdn.shopify.com/s/files/1/0436/0437/7757/files/large_printable_outline_world_map.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e5c.bin
15ddb20b6e6582408801cc3f2896f96c431dc0ccf2f9326d0366737f5063af52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5C 5060 bytes
font_01_sfnt_off00006fb2.bin
635ca8d9cb75c393e3cacdc204b92b66303eba27bad61aeeb75b1af6fda7bd79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB2 10132 bytes

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