Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ad7d8f92ac2ebe…

MALICIOUS

PDF

43.1 KB Created: 2020-09-01 00:46:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9e6d22d68b9b1a2c095d6d288f1461f SHA-1: 6f9d51c468a1518f68a199e3e46d064ba8fc77ad SHA-256: 34ad7d8f92ac2ebeb43887b4cc91d813bdacb323dd7d73a96258e7d192a8f374
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/wix?keyword=adobe+illustrator+cs6+via+google+drive', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain similar URLs and text related to software downloads, suggesting a lure to a malicious site. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO manipulation to increase visibility of the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=adobe+illustrator+cs6+via+google+drive
    • https://static.usrfiles.com/ugd/b8c837_affb6a93945c4d549595d45de0a7bee3.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_ebfff73fcc924ba2bb096d908a148c11.pdf
    • https://static.usrfiles.com/ugd/c345b0_016b93abf366491eb00ca7f6dc5d2641.pdf
    • https://static.usrfiles.com/ugd/4d935e_3f988ead56db4d8bb58aaf88982e863e.pdf
    • https://static.usrfiles.com/ugd/b8c837_a36c8583f62e4a5581e4a3c14d6868a1.pdf
    • https://static.usrfiles.com/ugd/efb3f0_13eb282f44a94ab5b7172e9a846c6aa4.pdf
    • https://static.usrfiles.com/ugd/b8c837_96fd505f73ce4c528ffd0cc23ef824c5.pdf
    • https://static.usrfiles.com/ugd/edb4a7_9d46142038b943b4a35d11725a887911.pdf
    • https://static.usrfiles.com/ugd/b77b08_0bed51d0e3364ac4996815092e03b02c.pdf
    • https://static.usrfiles.com/ugd/2f07a1_3709b2abfd6d47b7be31bbd6cce2104c.pdf
    • https://static.usrfiles.com/ugd/21e6f2_d785996a92da42a2a8fb88589a2afe7b.pdf
    • https://static.usrfiles.com/ugd/2b25b5_fc56999a338540fc847c62884f2faf94.pdf
    • https://static.usrfiles.com/ugd/913720_552f7a06aa714d1998913880c79140e1.pdf
    • https://static.usrfiles.com/ugd/7baf93_a9c9fb65ebcf45c9b0cd3f91bcb66d13.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ff3.bin
73fd337b2bca437dda4b1f52741d67e10743de75c11bcbc6a25623c6e70ec268
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF3 5452 bytes
font_01_sfnt_off00007283.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7283 1800 bytes
font_02_sfnt_off00007b11.bin
95d2f74e29ab7b852e1f3886b053ece2ab2a3677c2fef284d9ed9930f8b21d21
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B11 10892 bytes