Malicious PDF — malware analysis report

Static analysis result for SHA-256 907f11036efe88ba…

MALICIOUS

PDF

42.0 KB Created: 2020-09-01 17:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2f7fbd5b079efe6144d3d274d939549 SHA-1: db4cf312485d2bf7792b454b3d801ad89ad069a7 SHA-256: 907f11036efe88ba9da2cd46f43ab3b4972d9ad30a7589ad26c5562d89005505
152 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically 'ttraff.cc'. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=configuration+management+plan+template+dod', indicating a lure to a potentially harmful site. The presence of numerous external PDF links also suggests a link farm used for SEO poisoning or redirecting users to malicious 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.cc/wix?keyword=configuration+management+plan+template+dod
    • https://static.usrfiles.com/ugd/b8c837_c9a476d06f4149d8891dea33996ddab3.pdf
    • https://static.usrfiles.com/ugd/73c254_d0ee4a4db0d44f8195b3d8465d624022.pdf
    • https://static.usrfiles.com/ugd/8b49c6_e009f39b5dab44a8a8ca93e998fc4658.pdf
    • https://static.usrfiles.com/ugd/c1108c_2a90bd72a1ca48ee8ced00120f38e651.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/8508737254.pdf
    • https://static.usrfiles.com/ugd/de65f7_14bd8c3149884fb19252eabfc6fec951.pdf
    • https://static.usrfiles.com/ugd/b7306e_1e40923796c9442daa139951ab3fde2b.pdf
    • https://static.usrfiles.com/ugd/b8c837_27498844abce468995630715a08c56a5.pdf
    • https://static.usrfiles.com/ugd/7041e4_e218f6db314c45638004bd5ee338d84a.pdf
    • https://static.usrfiles.com/ugd/9b33c5_c6ab6816cf584db8a0bb5cb345e5b35d.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_df9e73d4d2984d8cb23c309d23515524.pdf
    • https://static.usrfiles.com/ugd/4dd980_15b01861f42848e993f78fcc1af03545.pdf
    • https://static.usrfiles.com/ugd/5899d5_f77223b8ad074e0e892eb6d8afad2854.pdf
    • https://static.usrfiles.com/ugd/a8c229_4913e2d0570b4637bed58eb5acc5d385.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_off0000668b.bin
27e948200cd505ba08403a42437c78ed827835bcce92f763f82e2a023d4b065e
pdf-font-stream PDF embedded font (sfnt) at offset 0x668B 5088 bytes
font_01_sfnt_off000077c3.bin
71ce5703b99195e2d8e08071e8c399e13c49cd2cde1b01e284ca54ec4dcbc63b
pdf-font-stream PDF embedded font (sfnt) at offset 0x77C3 10528 bytes