Malicious PDF — malware analysis report

Static analysis result for SHA-256 c66e8d00406c118f…

MALICIOUS

PDF

40.1 KB Created: 2020-09-02 12:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ea6caa32b10ca72f854c97e45f1d94e SHA-1: ea864c5c4ff7dcead0fdbd28c3d299d98b6f0a68 SHA-256: c66e8d00406c118fc80b4d190f0ed08f1d815814e8afb42a85a7844c2ec2ce3a
128 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which, https://ttraff.ru/wix?keyword=enclosed+please+find+the+report, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a report, aligning with the 'SE_INVOICE_LURE' heuristic. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content. No scripts were extracted from this sample.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=enclosed+please+find+the+report
    • https://static.usrfiles.com/ugd/cec570_16bf65c452f54cdd9341c4d38cd60cc4.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdf5f146ca094003854c4e8304bba7de.pdf
    • https://static.usrfiles.com/ugd/4117a9_f4a92a2f5bd943729616bb90e01a34c8.pdf
    • https://static.usrfiles.com/ugd/0ad6c7_dd7e7cb78d624f4dbbd540c78a0753d7.pdf
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/pukosapeno.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/asphalt_7_game_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/guzonogesosubigifesik.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/xamebibogowaru.pdf
    • https://static.usrfiles.com/ugd/b8c837_91bf990c28404a6b84c79293ed3236f0.pdf
    • https://static.usrfiles.com/ugd/035627_3c87afb732904d34977d44d8da253b57.pdf
    • https://static.usrfiles.com/ugd/696b8a_a6f017c5ed9f4526aca969ceea25c375.pdf
    • https://static.usrfiles.com/ugd/e8e253_928479779db3404fa5276bb70ade7003.pdf
    • https://static.usrfiles.com/ugd/b8c837_05f556faa2e44eb1b0ffad865cd588e1.pdf
    • https://static.usrfiles.com/ugd/defcb2_abe383b68e3e486eb36e12fd66cf5318.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_off00005f04.bin
654a08919a4f5763e58d5ec44bb3e1cba2a7f522ce0c9adf24c12c884d979e54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F04 5200 bytes
font_01_sfnt_off000070b2.bin
201ebd874d4f14f86790a4e9d2c10afdf3e1fdaca14364934dd34e8a5e631e47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B2 10308 bytes

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