Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d116a0ee669b6b6…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 07:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 817388ea06f688705a899cefb6e9e3d4 SHA-1: 82bcd76f3e333b249f28cf67e1af84f7177cf6fd SHA-256: 8d116a0ee669b6b6db5445e7371641de0fea942705e11ee1e1e8d89b1ed5fad7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector URL. The document body, though heavily obfuscated, contains the primary malicious URL. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution.

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.cc/wix?keyword=trustworthiness+qualitative+research+pdf
    • https://static.usrfiles.com/ugd/3ce946_cdc846c6889945608bc1a4d3b620d628.pdf
    • https://static.usrfiles.com/ugd/dd4472_c3f42ab7f7364e38821cb7d48912f396.pdf
    • https://static.usrfiles.com/ugd/b11f6d_1fa519f4001d4bb0af8ae84062f6be9a.pdf
    • https://cdn.shopify.com/s/files/1/0466/7742/6341/files/chammak_challo_song_320kbps_pagalworld._com.pdf
    • https://cdn.shopify.com/s/files/1/0439/0522/0776/files/22879574071.pdf
    • https://cdn.shopify.com/s/files/1/0432/6549/1107/files/96834377198.pdf
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/4264212451.pdf
    • https://cdn.shopify.com/s/files/1/0433/6880/8613/files/lososuwepajikubopujak.pdf
    • https://cdn.shopify.com/s/files/1/0428/6719/6063/files/nunupanibavegoxufu.pdf
    • https://static.usrfiles.com/ugd/5ed537_58bf54b2db474f4da11e5c91a25285ba.pdf
    • https://static.usrfiles.com/ugd/b88e3d_1e45c16c34ce4421ad1e914bfc82278a.pdf
    • https://static.usrfiles.com/ugd/f523c3_a21990003f4f4d2bb875225df957baf2.pdf
    • https://static.usrfiles.com/ugd/b8c837_779a8f071e7742d2b48e30c0235c4d51.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_0df9c7e33db14162aced26c7ad223939.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_off0000683e.bin
90f7d553597dc3f1db89ca1fa05912e24384c53452f2a4ec00b96429111740ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683E 5472 bytes
font_01_sfnt_off00007ae7.bin
116971f6f319ef1726652a9d9799c6650c75f6764d2ff01d193f83a764654d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE7 10280 bytes

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