Malicious PDF — malware analysis report

Static analysis result for SHA-256 8154773a5be24ca4…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 02:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 394cfaf47dea0acfb60a48b37cd7b05a SHA-1: 70612fe72bb68747bc00e216e743aefa93be4df9 SHA-256: 8154773a5be24ca4f6425be106da779cddf2e5261ccc401aff313461667ea7fe
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a significant portion of which point to a redirector service (ttraff.com). One of these links is presented as a call-to-action, suggesting a social engineering lure to trick the user into clicking. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for further exploitation or credential harvesting.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wix?keyword=basic+arrhythmias+gail+walraven+free
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/narasimha_naidu_audio_songs_come.pdf
    • https://cdn.shopify.com/s/files/1/0449/2269/9943/files/anemia_who.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/concrete_batching_plant_operation.pdf
    • https://static.usrfiles.com/ugd/b8c837_63cfe6ccbf0f42599e0f28bc976ac1af.pdf
    • https://static.usrfiles.com/ugd/b8c837_be7fa280f0f7406d832ece9bff050d7e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce009ef657864d7f8b0a84db86214aba.pdf
    • https://static.usrfiles.com/ugd/b8c837_8801f67e37f84cefb3a1839db9e3e676.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c8f8a7b44464f87a491fe47aa1ed692.pdf
    • https://static.usrfiles.com/ugd/b8c837_02be4e9ddc814943ae020a14cdcfa3df.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ff7f1d9d89e4e2789087cad1ca41012.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed2611ed69e142f2a28598a3986cfe9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f1b9f5a88e84d1e847c33a712fe93b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_f44beb747a9245f6bf874a2b572fcb98.pdf
    • https://static.usrfiles.com/ugd/b8c837_979e48bd6d234e64b21a0373b4d4efb4.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_off00005bab.bin
230d2bcc43ff349214beb3a793aecb4aade91359599dbacf0ade9faf44c0fa78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAB 5600 bytes
font_01_sfnt_off00006eaa.bin
ea69e301ca0f0b9ca9a5c51a4596db2b02cb0251e4496cbf284f4305830f6b28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAA 10472 bytes

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