Malicious PDF — malware analysis report

Static analysis result for SHA-256 7feda68c0cbedf14…

MALICIOUS

PDF

49.9 KB Created: 2020-08-30 13:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f08aa9666d514e4c1b1f591e8058d6b SHA-1: cdfe4ca8041cf3ab997637ae84dba62b393dfbaf SHA-256: 7feda68c0cbedf147ce047aa3323ff227660b7fce69a93abe2a36788aac335fb
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text related to a '1998 audi a6 repair manual', suggesting a lure to trick users into clicking the malicious link. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF.

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.com/wix?keyword=1998+audi+a6+repair+manual
    • https://static.usrfiles.com/ugd/b8c837_42a66ad919d34360ae6ce3c67c1ee1a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b598d61539d341b69596c25235f27f7c.pdf
    • https://static.usrfiles.com/ugd/b8c837_3f285d40b2ed49e0a72715a6dc92b3cb.pdf
    • https://cdn.shopify.com/s/files/1/0431/2478/5319/files/acta_constitutiva_sociedad_anonima_formato.pdf
    • https://cdn.shopify.com/s/files/1/0432/7548/5348/files/lujalosapu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4678/8502/files/94392328514.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/narusugugeguzoxomig.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/kedixuvawigav.pdf
    • https://cdn.shopify.com/s/files/1/0452/5031/4400/files/atpl_airframe_and_systems.pdf
    • https://static.usrfiles.com/ugd/b8c837_94873d6420b6408291bef7a9084a226b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d2309370a324b2c9b9d451de9dedad4.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/
    • https://static.usrfiles.com/ugd/b8c837_3f285d40b2ed49e0a72715a6dc92b3cb

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d7f.bin
fa1656a9a5d83f55f9f6d0339dd17f14355c2075aa63e59446a74e4a47c85965		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7F 5388 bytes
font_01_sfnt_off00008faa.bin
b81817f5a54e7ac363adda0c5adf0aea737a5acc0a6068c5f20d644b175c2070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAA 14244 bytes

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