Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9de6808344bd6be…

MALICIOUS

PDF

44.3 KB Created: 2020-08-31 01:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6ad270e353bf933c826f0e602f6badd SHA-1: 53f1097de65100272cad82e49eb13c56d96912cd SHA-256: b9de6808344bd6beb32b65dca5b890e3c97fa2ca058abaf95a9e340000530b1e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=paper+bead+templates+to+print'. This indicates an attempt to redirect the user to a malicious site under the guise of providing printable templates. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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=paper+bead+templates+to+print
    • https://static.usrfiles.com/ugd/f103bb_f98f1d07af3e41eda4512a38b463698c.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7611be48a7a4df19e2892168bd938e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_a644aabf54cd4891aee24555feb8c015.pdf
    • https://cdn.shopify.com/s/files/1/0439/1777/0920/files/jordan_belfort_book_way_of_the_wolf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5197/3794/files/38487297456.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/21030394301.pdf
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/xewuxafofotazi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2260/6759/files/figakesogipivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7218161301.pdf
    • https://static.usrfiles.com/ugd/77d535_b4784b325f774f6b987abbe942444454.pdf
    • https://static.usrfiles.com/ugd/01e791_57650ae0adc24a26b6ffa3ba196d6d23.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_off00007051.bin
adfda4dd3ade9956f2cfcbb8f0dd228721d3bc7280217e5bc7c52e714c5f8079		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7051 5248 bytes
font_01_sfnt_off00008201.bin
deb7d3c41eed219aff4ee44b7690e21edcb9bd5a5898f4fc3c09e0c98c5720b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8201 10120 bytes

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