Malicious PDF — malware analysis report

Static analysis result for SHA-256 28242010350b989c…

MALICIOUS

PDF

33.9 KB Created: 2020-09-01 13:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80bb878f4cfbe1f034e881c75ec4cc03 SHA-1: 80b928b16f46182758c8b2c5d92e4abd93a7e166 SHA-256: 28242010350b989c99a780c265b6053c3eb847feff610fb4648b5ab6def61d43
120 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, specifically pointing to 'https://ttraff.club/wix?keyword=mike+bevilacqua+sheet+metal'. This URL is embedded within the document body, disguised as a PDF file, indicating an attempt to lure the user to a malicious site. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to static.usrfiles.com. The primary malicious IOC is the redirector URL.

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.club/wix?keyword=mike+bevilacqua+sheet+metal
    • https://static.usrfiles.com/ugd/cbdbb6_c54f1e5417544d229d5e14e726c48196.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e8e1677c4d24c3b96da265f62ba50d6.pdf
    • https://static.usrfiles.com/ugd/23e9be_f958620a575f4337b93bd4cb0454102e.pdf
    • https://static.usrfiles.com/ugd/4b7290_84a1bb063b0145648e96263f50f69d35.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a22c593eb244513be12de1ec415c45a.pdf
    • https://static.usrfiles.com/ugd/0dd040_e21786d377bc4fcb968356029335ea16.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/titogasiritawag.pdf
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/55407397146.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/79783948259.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/vegan_bodybuilding_diet_plan_female.pdf
    • https://static.usrfiles.com/ugd/e1c37d_1d095da36ba441a69888c43f21260c0a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a32b667547324476903e0ce391f8835c.pdf
    • https://static.usrfiles.com/ugd/865d50_0505a8473fde4d3e95f19686c81ad661.pdf
    • https://static.usrfiles.com/ugd/23b571_864d42b578b74d24ad1834333e34127e.pdf
    • https://static.usrfiles.com/ugd/f55bec_b15429f34b93409e83595c561ce3cc04.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_off000046a6.bin
63df236b1cccbccccac960079606a2375b7d71a0a091c7f28ea55eb327bbcc0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46A6 5340 bytes
font_01_sfnt_off000058c1.bin
6b89216371c5f89ff9cdc109e0bf24f94df43e9b634a3e384b2c5ef4f020b3a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C1 9984 bytes

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