Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4e5ea41e0dd5782…

MALICIOUS

PDF

40.8 KB Created: 2020-09-03 05:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 595c0822b2950a7cdaeaa7163bdcd028 SHA-1: 441a519187d1daa471a6165e217897d7573bcf28 SHA-256: a4e5ea41e0dd5782d4fea7e31c046d83410a247d3049247c771d38323b6f686c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=chocolate+movie+songs++malayalam'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links. The document body, though heavily obfuscated, also contains the same redirector URL and several benign-looking PDF links, suggesting a deceptive content strategy to drive traffic to malicious infrastructure.

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.me/wix?keyword=chocolate+movie+songs++malayalam
    • https://static.usrfiles.com/ugd/0c41e7_d5918c4a7f724e6090e5dbe630e7e818.pdf
    • https://static.usrfiles.com/ugd/54fa57_bafa7a67bb114cf18584677a9904434d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0680102c75d64b889e4aaa0fcce7aad8.pdf
    • https://static.usrfiles.com/ugd/b77b08_183c79904e544c2b8379dcc24018178e.pdf
    • https://static.usrfiles.com/ugd/b8c837_82c9ab1f97674bc294c0e0898f661873.pdf
    • https://static.usrfiles.com/ugd/48f461_046bbc1e8c7c4888867ca81f7b9bf4cc.pdf
    • https://cdn.shopify.com/s/files/1/0434/8972/2534/files/antonello_venditti_unica.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/musezem.pdf
    • https://cdn.shopify.com/s/files/1/0465/4576/4510/files/argumentao_lgica.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/atul_purohit_garba_2017.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rodol.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1285/files/social_psychology_kassin_10th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2492/4319/files/28141084337.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_off00004bd0.bin
780276d19f4b9adaa6dce5add7ad71778b30c3aa450e1954116698c9bead2b70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD0 5184 bytes
font_01_sfnt_off00005d5e.bin
56c2361a09910457005d29372f353920102ec33a5eb548438111a3a3af6e575f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5E 10688 bytes
font_02_sfnt_off00008129.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8129 16164 bytes

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