Malicious PDF — malware analysis report

Static analysis result for SHA-256 214454be25e18f91…

MALICIOUS

PDF

51.7 KB Created: 2020-08-29 08:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96c3b061252acf30e12d07c9099d1df7 SHA-1: 3e616caaa67b93c1b93086caff08d78bdb0b620e SHA-256: 214454be25e18f91c26de35f9472854d5f341265d73735f6b007c57d962ad305
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented to the user as a "Florida DMV cheat sheet PDF", indicating a social engineering lure. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to increase visibility. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=florida+dmv+cheat+sheet+pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/ropefevixemeguwujufubik.pdf
    • https://cdn.shopify.com/s/files/1/0436/9101/6347/files/66506934491.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/pogigurasofamimitujedid.pdf
    • https://cdn.shopify.com/s/files/1/0433/8830/5575/files/best_newsletter_templates_design.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/lizubipirijosakaxulokel.pdf
    • https://cdn.shopify.com/s/files/1/0463/2861/0976/files/1815736485.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/zavab.pdf
    • https://cdn.shopify.com/s/files/1/0432/9344/2208/files/lamum.pdf
    • https://cdn.shopify.com/s/files/1/0433/9325/3526/files/meningoencephalitis_tb.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2622/files/28614138377.pdf
    • https://cdn.shopify.com/s/files/1/0435/3317/2885/files/maths_worksheets_year_2_addition.pdf
    • https://cdn.shopify.com/s/files/1/0428/1093/3414/files/jilarufesunulu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5353/1807/files/39761126553.pdf
    • https://cdn.shopify.com/s/files/1/0436/4566/5433/files/vobewilawamaxuxelovin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/82242541410.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/kiziwefirin.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/wisodiwabimugiwene.pdf
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/11104372005.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/botisudofeje.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ec5.bin
e1512f34126de8b990448ee8d50fa24989a3d70a37111f778e4d02a98b69d02e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC5 5092 bytes
font_01_sfnt_off00009020.bin
7f968663b42771aae20cb8070e60a8b7bc5a2620669aebf59ca2ef203f2b267b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9020 10344 bytes
font_02_sfnt_off0000b378.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB378 4324 bytes