Malicious PDF — malware analysis report

Static analysis result for SHA-256 3164e4d7bbf43632…

MALICIOUS

PDF

44.3 KB Created: 2020-08-30 15:19:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80cfb1ab15b7a9c54377da6b3c3f4c6e SHA-1: af5417b6cad9a321edfa36a95e0a5b894d65dfc8 SHA-256: 3164e4d7bbf4363232ef8b36fb0be3270ffffd5a3ac681f5af6be4edaf043a8e
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to direct users to a malicious redirector at ttraff.ru, disguised with a keyword related to a product manual. This indicates a phishing or scam attempt to lure users to malicious infrastructure. The document body itself is heavily obfuscated and contains the malicious URL, further supporting this assessment.

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=broadlink+rm+mini+3+manual
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/15344611694.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikas.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/tigonevabarupunopuxegigub.pdf
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/35321687686.pdf
    • https://cdn.shopify.com/s/files/1/0434/1124/3164/files/aep_report_power_outage_columbus_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0465/5277/6862/files/56604594094.pdf
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/warner_bros_studio_tour_souvenir_guidebook.pdf
    • https://static.usrfiles.com/ugd/4b7290_22fac7691a554797b977d640b3b743fb.pdf
    • https://static.usrfiles.com/ugd/d2cc1f_b3257060350a45f48d0a49c5346e390e.pdf
    • https://static.usrfiles.com/ugd/696b8a_0e09184f858045c48b87e5894ca0b33c.pdf
    • https://static.usrfiles.com/ugd/b8c837_00c046052104494a8996eeb759ab5322.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_a0ea159144174f77be7077269f545412.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba3326000c4c431b9463f4676d64e347.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_off0000640b.bin
1e9a7802d396e5c3830d31f4dd9e76207c5244693effb423f90d9f6c912633f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 4756 bytes
font_01_sfnt_off000073fd.bin
e3dc847d466bf28f0f4582e801fc0ad94517ae85d0c3ce632ef8faa099a72bbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FD 10112 bytes
font_02_sfnt_off000096a1.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96A1 4324 bytes

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