Malicious PDF — malware analysis report

Static analysis result for SHA-256 031ce93958011746…

MALICIOUS

PDF

48.0 KB Created: 2020-08-30 19:10:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbb9a373c9f143397c30e08ffd5b5b24 SHA-1: 4ccc10c4357847ac85c06b108609aa83fc052f12 SHA-256: 031ce93958011746dac9398d89fd540f3266eb558a8e2d4d30eb531a69c280f3
154 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Warner Bros. family entertainment logo' which redirects to a malicious URL. The PDF also contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness, and the presence of a redirector link further supports this assessment.

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=warner+bros.+family+entertainment+logo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/ppsc_jobs_2019_advertisement.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/70503791931.pdf
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/toyota_corolla_verso_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/zamuxasazo.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_72c357bdf4fb4f9cb41d1a902a925170.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc272b27e15f4de58af9a9a24f09f596.pdf
    • https://static.usrfiles.com/ugd/b8c837_165ba7408e5c438182cb6fd99e60f9c1.pdf
    • https://static.usrfiles.com/ugd/79cb75_cd84076a59094b76bc2d56a20719e66d.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_bb650a13cddd4044818a1627e013f342.pdf
    • https://static.usrfiles.com/ugd/e5a943_54fd1c7946964df2a45dcace218dfaab.pdf
    • https://static.usrfiles.com/ugd/f96b02_d27f7c92a05b445a9cca021c5c9b6a12.pdf
    • https://static.usrfiles.com/ugd/a64c8c_4b8724463b7942eb8f5582ab4ae1c38f.pdf
    • https://static.usrfiles.com/ugd/5cf23b_3d0a468492be488eb5d569109c21b6ff.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070a1.bin
2a592db66eeb25efa2068e27dd418b21a08c36affe4a09d2e2fb64ad67c081be
pdf-font-stream PDF embedded font (sfnt) at offset 0x70A1 5164 bytes
font_01_sfnt_off00008226.bin
5803ac8ad73215ef4e112eaf61af6992260c545c86874e6e4e03e2f24a3dcc47
pdf-font-stream PDF embedded font (sfnt) at offset 0x8226 10192 bytes
font_02_sfnt_off0000a50a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA50A 4324 bytes