Malicious PDF — malware analysis report

Static analysis result for SHA-256 65eae3a3b07e5c5a…

MALICIOUS

PDF

43.3 KB Created: 2020-08-31 17:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9642a7512e7969fd15b80ed710f6102d SHA-1: 52efebe3b75f3cda03676a7d182360bc1fd231b6 SHA-256: 65eae3a3b07e5c5a7d6566ea87976ff19af3f80a362ce161e8c642bf4c4fd3f1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, with one pointing to a known malicious redirector at 'ttraff.cc'. The document body, though partially corrupted, includes keywords related to 'Warframe eidolon hunting guide 2019', suggesting an attempt to exploit search engine results or user interest. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm or SEO poisoning strategy, with the primary malicious URL being the redirector.

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.cc/wix?keyword=warframe+eidolon+hunting+guide+2019
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7622/3129/files/nepowesawutumesuwur.pdf
    • https://cdn.shopify.com/s/files/1/0437/4901/5706/files/21110765835.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/visual_studio_change_project_name.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/que_significado_tiene_la_palabra_languidez.pdf
    • https://cdn.shopify.com/s/files/1/0435/4313/4362/files/carprog_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9313/9364/files/66992146669.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/towoniwokojabolobuwovaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/sudumep.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/27037059283.pdf
    • https://cdn.shopify.com/s/files/1/0432/0890/0768/files/fema_is_360_answers_quizlet.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2582/files/tufasuzabidegozopil.pdf
    • https://cdn.shopify.com/s/files/1/0437/8922/2045/files/back-_ups_pro_550_manual.pdf
    • https://static.usrfiles.com/ugd/63d3ad_963ab21e723a4403b11c23a2802de78e.pdf
    • https://static.usrfiles.com/ugd/bd5c68_9919be22607140a78073b41acc6014b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_529e85e8eafa4c27acd767bef33f89b5.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_off00006a93.bin
f819eb2428fcae3f5b052d93011221652c830046a8a9e8beccadab89206228b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A93 5640 bytes
font_01_sfnt_off00007db1.bin
a4433e164e1086d629ffe5d1bdd8042e5246c3a99404073b2282497af65a42bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB1 10120 bytes

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