Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d23026286e245ef…

MALICIOUS

PDF

45.8 KB Created: 2020-09-02 07:23:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70f53f445d52de1c6d50d91ba87c1810 SHA-1: 6b48a5e21a97b351ce5579b91fc8e64995f6aa70 SHA-256: 6d23026286e245ef20c8183685b30ec9eda8225ec749f73b7c07dd5506f10c02
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.me, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, suggesting a link farm or redirection scheme.

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.me/wix?keyword=kensei+guide+2018
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/6c032c_b1b5292ea0d14633acf654757058e4e1.pdf
    • https://static.usrfiles.com/ugd/3d0627_dd8e8dff2840445fb89d2fcea71a55db.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_3fa47dd5f82e402fadbe59bc22321d0f.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/firijizik.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a144960a525420684dbeacbb8ec8792.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_af5c45882fa946ef982b300a10c7eabc.pdf
    • https://static.usrfiles.com/ugd/d2b720_31f4c674bf7441a29b7976f9266a0b93.pdf
    • https://static.usrfiles.com/ugd/0bcf16_58f8e413e77d44beb6103dc4ee3a28b4.pdf
    • https://cdn.shopify.com/s/files/1/0438/1392/9122/files/mision_y_vision_de_dominos.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2174/files/lepunura.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_off000075f3.bin
93a81aeb92629fe6fab85cd79f4be0d47ec5d1c6f57965d350face5aae0cd124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F3 5144 bytes
font_01_sfnt_off0000879e.bin
3201bade4b46940c0e556fd7b8d5861cddb6de5c44a21edf9be9427a1185474a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x879E 10436 bytes

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