Malicious PDF — malware analysis report

Static analysis result for SHA-256 91bf8d1ce4b049a2…

MALICIOUS

PDF

35.5 KB Created: 2020-08-16 13:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90f20f2d94b212bd70ab26faa92f7df1 SHA-1: 24fb41256f966291c06bf352a39d66640d5d9239 SHA-256: 91bf8d1ce4b049a22c8c57af0911c2369d245406169d1a3308032fdfd1b0bdc5
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm or SEO manipulation, with numerous embedded links to external PDF files. One of these links, 'https://ttraff.ru/pify?keyword=boozehound+informally+crossword', is identified as a known malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious nature of the file. The primary attack pattern involves luring users to malicious infrastructure through a deceptive document.

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/pify?keyword=boozehound+informally+crossword
    • http://xitasir.soireeseventsrentals.com/uploads/1/3/1/4/131408280/8b18584.pdf
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/ancient_ayurvedic_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5517/files/minecraft_fishing_enchantments.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/netelevoroseradofojif.pdf
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/suwuke.pdf
    • https://cdn.shopify.com/s/files/1/0437/2401/3722/files/duforabagapulug.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/autocad_electrical_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/sinapusemukikibaninu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/nato_phonetic_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kamunikizesow.pdf
    • https://cdn.shopify.com/s/files/1/0437/7103/5809/files/58621494931.pdf
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/xotivemusabevejuteru.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9010/files/sezurub.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_off00004c6c.bin
81f05a36d331dbadf9b26838c9d9a72d678ed7c80f76aa44f70ab480dc6b1376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C6C 5556 bytes
font_01_sfnt_off00005f41.bin
ba3281b9d2850919c5afb305988cbc4c7728a14e157375d2ad2cecaaf4c4643f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F41 9960 bytes

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