Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80bb168c7f598ba…

MALICIOUS

PDF

46.6 KB Created: 2020-08-07 17:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aede8280604789b4e6266a0d8be622bf SHA-1: fc3a067ae91398402a419620fd1652c269247ccc SHA-256: f80bb168c7f598ba09f65095170fa878454197264e8401254a16ad507d2086b6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, masquerading as a free book download, which is a common social engineering tactic. The primary link redirects to `ttraff.com`, identified as malicious redirector infrastructure. The PDF also exhibits characteristics of a link farm, with many embedded URLs pointing to various PDF files, likely to manipulate search engine results or distribute further malicious content. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attempt.

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=how+to+speak+fluent+english+book+pdf
    • http://files.hackenthorpelodge.org/uploads/1/3/2/7/132712451/5213939.pdf
    • http://files.williamdbryan.net/uploads/1/3/0/8/130814408/b4063.pdf
    • http://files.nrt-ias.org/uploads/1/3/1/4/131453522/soribamirawiwug-nasajipafisuw-mozunevuxevonop-vatojujinewovi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/robawonoderonipezi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/ailing_planet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/15167826271.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/35243895032.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/36663822262.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/mickey_s_christmas_carol_golden_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/guide_to_network_defense_and_countermeasures.pdf
    • https://cdn.shopify.com/s/files/1/0435/1072/6815/files/fusum.pdf
    • https://cdn.shopify.com/s/files/1/0434/0157/6602/files/english_speaking_learning_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6533/6217/files/67199550557.pdf
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/bagopekojisuxe.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077f5.bin
09a3d60a3a480321f77176b99b0e658940fa1d988378e7e6eeba303b69bcbe22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F5 5464 bytes
font_01_sfnt_off00008a98.bin
4ea7179f7a3f309cf10b0ba65ad05f9657b5031b11813b60ca958a2fe45d5bea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A98 10256 bytes

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