Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0310c02f865330…

MALICIOUS

PDF

38.6 KB Created: 2020-08-31 01:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dd277d7ab28aa78713cd36765ae729b SHA-1: 8489c527520d0a0da6d2909d1af8761e97d891f7 SHA-256: 5b0310c02f865330be20a3f19508564a1a73de61eaaf4853179b9d9de92def9f
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.ru/wix?keyword=devdas+t%25C3%25BCrk%25C3%25A7e+dublaj+izle+hd`. The document body also contains this URL, suggesting the primary purpose is to direct users to potentially harmful websites, possibly for phishing or malware delivery.

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/wix?keyword=devdas+t%25C3%25BCrk%25C3%25A7e+dublaj+izle+hd
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/0745/1029/files/self_learning_english_speaking.pdf
    • https://cdn.shopify.com/s/files/1/0440/3183/6310/files/16680049931.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/capelania_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33971068516.pdf
    • https://cdn.shopify.com/s/files/1/0433/3951/4006/files/zelogiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0437/0395/9720/files/borajuwadaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/xopomisizedinirisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/72345806959.pdf
    • https://cdn.shopify.com/s/files/1/0432/6267/3054/files/27281413554.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/comunismo_socialismo_capitalismo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdf
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/american_bully_puppy_contract_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/8782/0968/files/cakephp_2._x_date_format.pdf
    • https://cdn.shopify.com/s/files/1/0432/4468/3432/files/73548527473.pdf
    • https://cdn.shopify.com/s/files/1/0436/7712/2713/files/kogodakapibameputonigi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049e6.bin
34bd4c94334503783a9111121cbcccc272e41203b32aa833a6b71fea76ebfcf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E6 5272 bytes
font_01_sfnt_off00005bc3.bin
cf805e833a3f39bdb50cd3d06b33cf7b5a69b35e0d046d907c9402ea5850a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC3 10732 bytes
font_02_sfnt_off00007d40.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D40 4324 bytes

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