Malicious PDF — malware analysis report

Static analysis result for SHA-256 7584635fb658023e…

MALICIOUS

PDF

40.8 KB Created: 2020-09-08 02:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f64755313f6a7adf624c72a703fcd1f4 SHA-1: 08fdf462b9388019fc2c36a9cd1aff3d8c26f8aa SHA-256: 7584635fb658023ea91e0d988f8deb616a5a47411f36d1338331919dcae1102c
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Formation aménagement du territoire et urbanisme' and the malicious URL, suggesting a lure to trick users into visiting a potentially harmful site. The presence of numerous links, including the malicious one, indicates a link farm or SEO manipulation tactic to distribute 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.club/wix?keyword=formation+am%25C3%25A9nagement+du+territoire+et+urbanisme
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/4129/0397/files/home_building_plans.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/40070847884.pdf
    • https://cdn.shopify.com/s/files/1/0433/0602/5128/files/levejaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/8443/7922/files/pevidozofupirogawitevatov.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/74152395571.pdf
    • https://static.usrfiles.com/ugd/f46427_84cbfc72beef4e7895f606e11300733a.pdf
    • https://static.usrfiles.com/ugd/cf5aa9_e507e42b1a4c47aba0cc5ffb952b70c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_acd4e2360e3442e3b86e781b90b26e2c.pdf
    • https://static.usrfiles.com/ugd/aec2ea_e4896dd41236437ba50b8f7411bfbb81.pdf
    • https://static.usrfiles.com/ugd/5ed537_8988406955d144fdb786736d655baa4c.pdf
    • https://static.usrfiles.com/ugd/3801ff_98998bbe1ef645fcb6a7dfc4160d2d8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ea41ad8af7544b85a84fa16b69343393.pdf
    • https://static.usrfiles.com/ugd/a44510_fc784b5c4a494de89e22ac94766f173e.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_off00005e22.bin
16a5df3afb1ccbe23cc43a404259306b4d11802c817d96b54ac6e60e1e7015c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E22 5352 bytes
font_01_sfnt_off00006ff1.bin
de234b0b36b284fe45103711e2865c243893b123df2c58e5f3e8198ccedca24f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 11440 bytes