Malicious PDF — malware analysis report

Static analysis result for SHA-256 283b84ac4255f75c…

MALICIOUS

PDF

44.7 KB Created: 2020-08-31 14:37:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03eec927c2109197fe6304b7256024f2 SHA-1: 3b98bcf3c240c544467817594beee70af68c2b23 SHA-256: 283b84ac4255f75cd8d29f1d7450762f469cfaba46d44c00d56135e398e74253
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wix?keyword=grandparents+family+law+information+guide, which is flagged as malicious. This suggests the document's purpose is to redirect users to a harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=grandparents+family+law+information+guide
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/portal_knights_sea_sapphire.pdf
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/what_is_zip_code_on_visa_card.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4917/files/89741859746.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/guwixumoroke.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/44420601078.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/10249438834.pdf
    • https://cdn.shopify.com/s/files/1/0432/5415/3371/files/3855073973.pdf
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/burrakatha_in_telugu_naa_songs.pdf
    • https://cdn.shopify.com/s/files/1/0432/2289/2711/files/lowupabesise.pdf
    • https://cdn.shopify.com/s/files/1/0464/4975/4280/files/94812661159.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/basic_energy_io_crystal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/benjamin_graham_on_value_investing_janet_lowe.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_off000062a2.bin
5c4089a329d6c23b646a9dd01bc61636f97d1822c642801b1cc138cf14c8615f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 5468 bytes
font_01_sfnt_off00007541.bin
be6cce288194d9b739f8db4d1375f81f31ce4416ab9b93104510d9be50086aaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7541 10172 bytes
font_02_sfnt_off000097d7.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97D7 4324 bytes

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