Malicious PDF — malware analysis report

Static analysis result for SHA-256 429f989d3bff24a3…

MALICIOUS

PDF

31.7 KB Created: 2020-08-30 14:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: beedde2f19ad4c56054377f04da3eb40 SHA-1: 20ac80b317c2bf171b86bbbfaaab7b3435f9b686 SHA-256: 429f989d3bff24a3e9e416e1516f5da58983b30ab5c2a5d4cc475ff6bcc16c38
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic firings indicate this is a PDF link farm, likely intended to manipulate search engine rankings or redirect users to malicious content. The document body itself is heavily obfuscated but contains the malicious URL.

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.ru/wix?keyword=base+ten+grid+paper
    • https://static.usrfiles.com/ugd/b8c837_a491572542ef42c1947d8db075ac2291.pdf
    • https://static.usrfiles.com/ugd/b8c837_def354568d19499382b813ed6743059c.pdf
    • https://static.usrfiles.com/ugd/b8c837_93101a807d464f42903c65c8a4de4a78.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_be8f8ad3aad54a9c984416fab4db7983.pdf
    • https://static.usrfiles.com/ugd/05900a_6162b7317256442698f7a0632efcfbf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf91498ea48742079480099e6ea22503.pdf
    • https://static.usrfiles.com/ugd/b8c837_353b0119927641cb82803edbdeb8fc6f.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/50874132323.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/bleach_opening_14.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4690/3709/files/get_your_guide_rome_italy.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/48299705969.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/94386835568.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_off00004156.bin
f5c51d639a9f523038545226cf18fb882a56696733fc0ba7c346683d3297c933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4156 5144 bytes
font_01_sfnt_off000052d8.bin
d5bb6baa0fe4b39bcb661058bf12adfa99589dc2fef723118e5be0fbd1765ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D8 9264 bytes

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