Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf0f9cf2c0186b2…

MALICIOUS

PDF

40.4 KB Created: 2020-08-29 03:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdb1167b27e12632f863b4273d4065ca SHA-1: f3bd5f386c935d3301a147135fe1e7a939577c23 SHA-256: 0cf0f9cf2c0186b2c521762caef2c306e8831fca7bf471a49a4a2b59d11537e0
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, with multiple external PDF links. The embedded URL https://ttraff.com/wix?keyword=the+connected+company is identified as a malicious redirector. While no scripts were explicitly extracted, the nature of the heuristics and the embedded URL strongly suggest a malicious intent to redirect users to harmful 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.com/wix?keyword=the+connected+company
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_15905acc585e43af92e417bf7040f5e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca6aca370f124b1b9c1597a557f422a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed62119cfa0342c2a416b4b9b0878903.pdf
    • https://static.usrfiles.com/ugd/b8c837_1037790485224ff38018261402570516.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e1b253cbb1f4a0d8a0cbfac212b163b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f139695ee2484889a870e9f9d6725a17.pdf
    • https://static.usrfiles.com/ugd/b8c837_0137f027e3e7450793abf5d066fa5ec1.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc102151c145408da4fd1d363b2187d9.pdf
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/popozopelet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/wepobabekojogolefe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4567/files/items_teamfight_tactics_cheat_sheet.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_off00006236.bin
b2c3be7377acf9b5a4d8a1593c5c684f681a4c16f076f8b2cb3982edf5f5a3cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6236 5056 bytes
font_01_sfnt_off00007340.bin
ccd644dd27ff830dfb22b9b19ad1ca469046659268f663e8cca7928a276e7433
pdf-font-stream PDF embedded font (sfnt) at offset 0x7340 9956 bytes