Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8cb005117aa92b2…

MALICIOUS

PDF

39.1 KB Created: 2020-09-01 02:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4d25b1a6db2b4619cb5e642a5b3c3e3 SHA-1: 4de7fe71cf1ea34cb888b53e110ca751dcbb00ef SHA-256: d8cb005117aa92b2c7e8155915d0407d82c7ac3a2131d6a4a656b6746a7510ab
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=constantine+bay+surf+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though partially corrupted, contains text related to a 'surf guide' and the malicious URL, suggesting a social engineering lure. 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=constantine+bay+surf+guide
    • https://static.usrfiles.com/ugd/fedf23_e1707627e7bf495f9956bad7d3d31ae2.pdf
    • https://static.usrfiles.com/ugd/a48928_36a3ddbd16a24020a9a284a08b4c93b3.pdf
    • https://static.usrfiles.com/ugd/0aab01_4ea2c8abf21d415abce1934989f2c418.pdf
    • https://static.usrfiles.com/ugd/ca300b_12a8c0644c7f4e2eb977fa2ed954d422.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/ignou_sc_st_free_admission_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/bosch_classixx_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/kulofimegiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1085/files/wedding_dash_free_game.pdf
    • https://static.usrfiles.com/ugd/3bca44_aaf65076535f4be0aa25f012a047797e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9230c86d10a04fcba2dab7aade11405f.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_off00004fc2.bin
7aebd0398e09e9409f0dde7465b40901e4ba7e5a6c09c067500aedace8c4b785		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC2 5188 bytes
font_01_sfnt_off00006179.bin
510c5b9bcd017a66ab345861ba00dcc255747cc43a09bea057f721296656f52c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6179 14440 bytes

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