Malicious PDF — malware analysis report

Static analysis result for SHA-256 213257de591c1a55…

MALICIOUS

PDF

34.5 KB Created: 2020-08-30 07:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee665fc8a36491638ff1a2f4833838e5 SHA-1: 81415e979ee753caf18f90c94b8a78b80d8f99ca SHA-256: 213257de591c1a553b08d22cf0f5b9f57eea3d112071e84e4b4fa32014036992
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it's a redirector link to a known malicious URL. Additionally, it features a PDF link farm, suggesting an attempt to artificially boost search engine results or distribute further malicious content. The primary malicious URL identified is https://ttraff.me/wix?keyword=le+jour+de+gloire+film+streaming.

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=le+jour+de+gloire+film+streaming
    • https://static.usrfiles.com/ugd/7598fa_05ed0540ac004400b2a18b546f5a9ebf.pdf
    • https://static.usrfiles.com/ugd/1be480_9426809fc24345f58d1a5b1ddcf6279e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef2bd8778cf849fd9c7f220d72f0503f.pdf
    • https://static.usrfiles.com/ugd/b8c837_fafa41c826854254940890c10bed8360.pdf
    • https://static.usrfiles.com/ugd/b8c837_001f808e5be346c29c604315f1ed1e70.pdf
    • https://static.usrfiles.com/ugd/b8c837_8fb55a0add6e4304b3a96b56f0bdc8e2.pdf
    • https://static.usrfiles.com/ugd/5899d5_672285af6ef3428989409056777cafae.pdf
    • https://static.usrfiles.com/ugd/b8c837_2734c83abdf44af1a55532e2184037fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_48dc53febf4446e7a5fe830090f0ea75.pdf
    • https://static.usrfiles.com/ugd/30e015_081eee874ac74f639c815cafc6224faf.pdf
    • https://static.usrfiles.com/ugd/af0aa9_1e3e4c5ad1124f30a10a37acb9884d8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c44407b9b901460694c3080e5b5616a2.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/fekinovumigapazes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/android_emulator_nexus.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000480b.bin
5bee8dd4d68649dc1c176200975d375ed27b4cb0f29bc955a3b727fd880b2e2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x480B 5244 bytes
font_01_sfnt_off000059d6.bin
b48798c32de265c522a0802ac4220ba5417f71ee6a5f63b164d774354eb2b4fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x59D6 10976 bytes