Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e98cf5439939a7…

MALICIOUS

PDF

39.8 KB Created: 2020-08-30 06:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7639717405dafcdcc393b5a3eac94235 SHA-1: 7eccdee11eeee193b585d5890b5477444202c1b4 SHA-256: e9e98cf5439939a7a385ae88b9578742e2e5f67611ccc1de6551e5d15c57c98a
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=28+weeks+later+download+in+tamil'. This link is presented as a download for a movie, likely a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to distribute malicious content or engage in SEO poisoning. The presence of a 'Download Button' heuristic further supports the lure-based attack pattern.

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.cc/wix?keyword=28+weeks+later+download+in+tamil
    • https://static.usrfiles.com/ugd/b8c837_73a997d589bb4aad9a06a1fbfdf871ed.pdf
    • https://static.usrfiles.com/ugd/affaa6_191ab887059f498091bc55c7cb022145.pdf
    • https://static.usrfiles.com/ugd/b8c837_d12a3f6d021f4c22a88aef88d33fa80a.pdf
    • https://cdn.shopify.com/s/files/1/0437/7611/4837/files/dysmenorrhea_guidelines_2016.pdf
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/la_bella_durmiente_del_litoral_cuento.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/zewelexowakod.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5579/files/xotaluzokabebitasuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1193/files/local_broadcast_receiver_android.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_84918e9bc7e347a6ab37571aa30a86af.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa86e560b5d84967a8f05fbf899b2897.pdf
    • https://static.usrfiles.com/ugd/d01287_2cc2f5b5732f42ba83f8f84ef38962b4.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/zevisoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/manedezesopiwebedugeko.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_off000059f5.bin
87dd04b12bda677e0df9f63e9961d68adad66a006245506baf365057cdd99e2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F5 5356 bytes
font_01_sfnt_off00006c17.bin
3ef0cd56405c7bf9651f9f6fcbe51a11b60f5670317d0703d709a62e4f4e222b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C17 11612 bytes

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