Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d05db49f81a2a8c…

MALICIOUS

PDF

38.3 KB Created: 2020-08-29 14:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 724ba1d7459bf51c67a92cb96c3fd143 SHA-1: 8dd3f67cfdd19ebfded8bf41ed99db3ab636a67c SHA-256: 4d05db49f81a2a8cd439032742dde878f04118b9742c62be5562b9ba83535cd8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'chronopost' and package delivery. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links to potentially harmful content. No scripts were extracted from this sample.

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=paris+bercy+tolbiac+chronopost+t%25C3%25A9l%25C3%25A9p
    • https://static.usrfiles.com/ugd/b8c837_a107a1d0827641bd97289a95c729bf0a.pdf
    • https://static.usrfiles.com/ugd/b8c837_76881a6c76af480785f015fecb06af56.pdf
    • https://static.usrfiles.com/ugd/b8c837_5fdb7d79bdff4ada8e030df7de01ffe3.pdf
    • https://static.usrfiles.com/ugd/d2751c_13ebc3ede5cc46aa8581c53248a898f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c9a36911d6446bbacbd7eca97a881b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_800779e1ec8c49b1a275df427b97cfe7.pdf
    • https://static.usrfiles.com/ugd/b8c837_df810c8a8ea2474b99aefa33e2dbe80d.pdf
    • https://static.usrfiles.com/ugd/b8c837_178d1e4ec1374ce6b865e9f84b4d4492.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c6562fb9f3f4a639c5972b0271a1b79.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0cd584adfd84226944bf179f5467e41.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/android_studio_sdk_tool_missing.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7855/files/texalojof.pdf
    • https://cdn.shopify.com/s/files/1/0434/1393/0138/files/bicentennial_man_movie.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_off000052c8.bin
563b1644b4e6863cf27849b76876fc0d97f972a1f0c3ff2d61ceb38bdaf43c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52C8 5408 bytes
font_01_sfnt_off000064d8.bin
ee0c4ec04c6eca2a074fbc902b771897ab01d00a7cd41fd2380a3902ebb5c773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D8 11620 bytes

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