Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab4ad3fe3d5919c…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 18:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abce077b8ae70b62520839ebc9686c67 SHA-1: abca71c36b8f01f71441455c2adc2dec0b3ff5cc SHA-256: 6ab4ad3fe3d5919c71ce10443a944e4e60325afabec2e5542d7d9e8dc5d50d04
154 Risk Score

Malware Insights

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

This PDF document contains embedded links that lead to malicious redirector infrastructure, specifically to 'https://ttraff.com/wix?keyword=diablo+3+guide+xbox+one'. The document body, though heavily obfuscated, contains keywords related to the lure. The presence of numerous external PDF links, many pointing to benign content, suggests a link farm or SEO manipulation tactic to disguise the malicious redirector. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=diablo+3+guide+xbox+one
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_8fdf5570ff97428e8f0351ceb8941f62.pdf
    • https://static.usrfiles.com/ugd/b8c837_40f6f4ca71f74898a515a2598ec36831.pdf
    • https://static.usrfiles.com/ugd/b8c837_8858d9293e914f639ef3c5e852b4a3c4.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb0899de63194060909ada918b713a7c.pdf
    • https://static.usrfiles.com/ugd/d1d005_851ab943a81642e2bb37bb02665a1a77.pdf
    • https://static.usrfiles.com/ugd/b8c837_58c7cd9e7fb84697a096215b1eac9c71.pdf
    • https://static.usrfiles.com/ugd/b47706_b961c3e68ffd4059972c3ddfafd2c6c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_0425a56518024801944dc1c0f3b7465b.pdf
    • https://static.usrfiles.com/ugd/b8c837_97f37fc9c1784e3aadce6cbab6f40feb.pdf
    • https://static.usrfiles.com/ugd/4c1554_bac78238362947429d78db3b1f6359ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_580575a57c014bba9314d1ad3098713d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3893e123da54d9893a167f3cf863578.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_off00005e2c.bin
c94ade51617ec266d7bcce9229f1d250b473cf07c0152e8428273a22fec8c7b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2C 4892 bytes
font_01_sfnt_off00006ed1.bin
02bd93a4d4bd24ea5109ca9d578046e37d93f56a7960971100f20c118ceb77cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED1 10192 bytes
font_02_sfnt_off0000919e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919E 4324 bytes

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