Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c504c9d75235ec3…

MALICIOUS

PDF

44.2 KB Created: 2020-08-29 06:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f3fbd727270a88c5ceca9f0ce78766d SHA-1: 614a0438e4810a3a39f6412cb5d41d809d25c02b SHA-256: 5c504c9d75235ec3fbf49dedb0e6adec782de427a03a8f9bef2c90f828acf93d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.link/wix?keyword=monolingualism+of+the+other', is designed to lead users to potentially harmful content. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO poisoning to attract unsuspecting users.

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.link/wix?keyword=monolingualism+of+the+other
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_dcf45b131d3d4d79b208d929330b5bc1.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2ed402bc9134b75bfcbc7866d5e1031.pdf
    • https://static.usrfiles.com/ugd/b8c837_af5b39bead9645019c6916031e6faa88.pdf
    • https://static.usrfiles.com/ugd/b8c837_774efeb839ad48a9a590285939142e34.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b75bd4ce4f7415a8768c37507cc0938.pdf
    • https://static.usrfiles.com/ugd/b8c837_eaac42ce775643ff8ce1e60892284d11.pdf
    • https://static.usrfiles.com/ugd/b8c837_7eceea9b7583450080bd437e401494f7.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f19f3f709c24505b265ac7d5dbada1b.pdf
    • https://static.usrfiles.com/ugd/b8c837_acd2b21d711d485d93ff7233026187c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_914a14dffbc34e618f8844e994ab2473.pdf
    • https://static.usrfiles.com/ugd/b8c837_9977ba73851845d7a55f34bee9c89297.pdf
    • https://static.usrfiles.com/ugd/b8c837_c29ae1bceaaa479c8e4ea670a18e14fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f54dcd7a6aa41818db7af5c9f301ed3.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_off0000630c.bin
436767193c676b47ebe5b681e51ea8c89785ab4dedf9439501b8d49579017f4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x630C 5068 bytes
font_01_sfnt_off0000741e.bin
4a560e33d39b99c5b11fc0365a1b4499349d22d4256f2ff8cd747d2f3cbfe24f
pdf-font-stream PDF embedded font (sfnt) at offset 0x741E 9988 bytes
font_02_sfnt_off0000964e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x964E 4324 bytes