Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d7906c8c51ff40e…

MALICIOUS

PDF

44.1 KB Created: 2020-09-16 04:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 711c09ab0eec35c86ec7579132b458b5 SHA-1: 6031c1010aa3ca27a91200f06048024662bf19ce SHA-256: 5d7906c8c51ff40ee9dd130abbad2f5224ea70b1b10bee9610856e78b816a2ec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.club/pify?keyword=will+insurance+cover+tummy+tuck+with+hernia+repair', which is flagged as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate links.

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.club/pify?keyword=will+insurance+cover+tummy+tuck+with+hernia+repair
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9517/8902/files/61498420573.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/risk_management_process_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/86100071522.pdf
    • https://static.usrfiles.com/ugd/2a2e94_8185578c46c34a0bb3fcced974e00237.pdf
    • https://static.usrfiles.com/ugd/4c1554_018bd5328d234da5a021c9f7731b1670.pdf
    • https://static.usrfiles.com/ugd/4c1554_ec37d04ec1524199a6fb848e68c616a9.pdf
    • https://static.usrfiles.com/ugd/5f4192_08ba7f5c40014a878d5fadf3d1954dc1.pdf
    • https://static.usrfiles.com/ugd/ede58b_7643092b1fe24d2b850a4a59bc72758e.pdf
    • https://static.usrfiles.com/ugd/b50c55_ed892d2817d142339a8c980d0c7eb91c.pdf
    • https://static.usrfiles.com/ugd/79e0dc_a5a37d0edf2a4796917292e3006ba027.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f19fccfaa3946ce9e5e591fb39577f8.pdf
    • https://static.usrfiles.com/ugd/ef7b09_e73255e7641346d38825a86705a2a938.pdf
    • https://static.usrfiles.com/ugd/b463f2_599cfb03b65a4c2283a5c3dbf35ac763.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_off00006dd2.bin
7a9eb579f075dc338ab1200c975aef14f421d64b27cc85b2af3be5eceff92b3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD2 5504 bytes
font_01_sfnt_off00008083.bin
95a213cf5f8a342195cedd7eb7e007652c90bde86dbf95b45801f1b0513acdae
pdf-font-stream PDF embedded font (sfnt) at offset 0x8083 10172 bytes