Malicious PDF — malware analysis report

Static analysis result for SHA-256 14647569160f1642…

MALICIOUS

PDF

44.2 KB Created: 2020-08-30 11:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a044ca41cd126217bc40b0f15d28c5e3 SHA-1: 9b91782be978847418709a1520aae69cb5914b39 SHA-256: 14647569160f1642aa1205096e0f75a8397f096685b31444f621a5075c99d3ac
154 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document also exhibits characteristics of a link farm, embedding numerous links to other PDFs, potentially for SEO manipulation or to distribute a payload. The ML classifier strongly indicates maliciousness.

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.com/wix?keyword=fidget+spinner+and+cube
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/ad2ade_0d189b71b9014e5288c32f6a89675f3f.pdf
    • https://static.usrfiles.com/ugd/83b1b3_82f63393ba554072a4b37f18fba5acd9.pdf
    • https://static.usrfiles.com/ugd/760101_b0b4cee5bb9640b1972d361dc7cd7214.pdf
    • https://static.usrfiles.com/ugd/4bb894_5c593f47ad0e40c78776a0eab54bae49.pdf
    • https://static.usrfiles.com/ugd/48f461_b5ee21b230a7438ea7b45cab6701ca05.pdf
    • https://static.usrfiles.com/ugd/b8c837_9690b3e34f7743159963d5027f40e0e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2c2396210724176abdfc9fe94180e7e.pdf
    • https://static.usrfiles.com/ugd/6f7357_75fb045a753d4a81a0c15eaf85f9a1b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_04facc1e46bc494c84e16378514556aa.pdf
    • https://static.usrfiles.com/ugd/565485_bb686c6c2ba24072ad49722bcf1a0dc5.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_off00006f37.bin
f78fab508268b44ad793d027fd0713db775a4879637f7a41b11b5e11064e38bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F37 5304 bytes
font_01_sfnt_off00008143.bin
e39429a0d8dee74d84ca789416857d9987e6bcd40e826031aaff68794419aae7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8143 10352 bytes

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