Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff9cd782476e7da…

MALICIOUS

PDF

37.8 KB Created: 2020-09-07 17:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fd9cce9f7e9389cd0eb1da9fe07d62c SHA-1: 8faac3a8e668c3f9b7d42d2453fd8ad3227a915e SHA-256: 2ff9cd782476e7dadc486f281eef60761c4c1ca6806c53e985e64375facb69ad
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=arjuna+arjuna+hd+video+songs'. This URL is presented within the document body, disguised with keywords likely intended for SEO poisoning or clickbait. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many pointing to static.usrfiles.com. The primary malicious URL is the most significant IOC, suggesting a phishing or redirection attempt.

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.link/wix?keyword=arjuna+arjuna+hd+video+songs
    • https://static.usrfiles.com/ugd/cd79e3_0519c1be64a848edaa63aaf98c710972.pdf
    • https://static.usrfiles.com/ugd/9fc8c3_60a193318c854b47bb9196855b07654d.pdf
    • https://static.usrfiles.com/ugd/d4579c_228004df66bb4a9db3ef5dcfe9263476.pdf
    • https://static.usrfiles.com/ugd/f91cf1_449ff5d28b0b4845b68aa614a5968da6.pdf
    • https://static.usrfiles.com/ugd/113e89_71fbed37c0ef400ba952db1e73dd3ce6.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/bulitovasimus.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/antivirus_gratuito_para_android_tablet.pdf
    • https://cdn.shopify.com/s/files/1/0469/0513/1170/files/reporters_today_show.pdf
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/attendance_management_system_project_in_android_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0449/9036/5864/files/batman_game_gba.pdf
    • https://cdn.shopify.com/s/files/1/0428/4180/0860/files/93517559132.pdf
    • https://static.usrfiles.com/ugd/a771bd_fba7f595752245afb31986183227bfaf.pdf
    • https://static.usrfiles.com/ugd/9219f8_f0fcaeb2e5564c5d89cd46c4a0ed9e5f.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_off00005514.bin
485835349dfd7b2a9d64b7390cda367916cd45555aa3369e6767d2017e226e69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5514 5180 bytes
font_01_sfnt_off000066ba.bin
bf5bac185305e3dcb66aa62f388c7591ea87f71d7cc8a766dc9d2c082db8ceca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BA 10532 bytes

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