Malicious PDF — malware analysis report

Static analysis result for SHA-256 f92906ab517b5c86…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 02:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5819debbc34fdcf69dfb9dc908a4ea53 SHA-1: e3816360fce2764aba99661c0d14a56421fbd0c7 SHA-256: f92906ab517b5c86f38d5bf398130af64bcb6094ea81d4af0f1d84156590e3fd
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a high number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=icas+maths+paper+f+answers', indicating a lure related to academic answers. The presence of a visual download button heuristic further supports a deceptive user interaction pattern.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=icas+maths+paper+f+answers
    • http://sunotuvom.vivaballet.net/uploads/1/3/0/9/130969742/958fd428.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9496/files/party_rock_anthem._mp3.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/43224271562.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/50004163924.pdf
    • https://cdn.shopify.com/s/files/1/0439/6161/4494/files/pencil_drawing_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/pijimagamovaxikepejavuwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3302/files/40487798384.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/229905594.pdf
    • https://cdn.shopify.com/s/files/1/0432/7145/4883/files/35409409192.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2102/files/essentials_of_statistics_triola_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/kepefamisugarepulalifupu.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_off0000682c.bin
48b68709273a007420ccc4e198dfc87e7459770d788a2eb035be68870d008c72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x682C 5252 bytes
font_01_sfnt_off000079ef.bin
f9f22719e2bc22ff1f9ec93659167a91c2c4a66b13f6832816ba58d15449304c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79EF 14192 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.