Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff05465079e2ba60…

MALICIOUS

PDF

40.3 KB Created: 2020-08-22 02:29:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3eaffff352430319ed3a6e717cfbf90 SHA-1: 9dfd5508119ed9dd8449709169728d75e3c2ac9b SHA-256: ff05465079e2ba601ad4b88a058e36bf826eaddeacd6b190ffd5bcf999c8ceb9
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Aaa logo 2014' and references the wkhtmltopdf tool, suggesting a lure to download or view content. The presence of a link farm further indicates an attempt to distribute malicious content or drive traffic to malicious sites. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=aaa+logo+2014+full+version+free
    • http://files.ekhaonline.org/uploads/1/3/0/7/130739949/afa525603d9324.pdf
    • http://files.cariebertseminars.com/uploads/1/3/1/3/131379085/vekudemovoz.pdf
    • http://files.berrienbaseball.com/uploads/1/3/1/1/131164431/7714943.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/99282303285.pdf
    • https://cdn.shopify.com/s/files/1/0463/5489/0913/files/furling_genoa_sheet_length.pdf
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/bafadekomub.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/que_sera_sera_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/curso_de_ingles_gratis_y_audio.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/40697675862.pdf
    • https://cdn.shopify.com/s/files/1/0435/5666/7541/files/zirafo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8167/files/galapizawumirapikal.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5569/files/create_marksheet_in_excel.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_off0000604d.bin
665400ff3116225dcc7abf15d882b0c1940def29994c9fe1aa9cbafbb947df7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604D 5396 bytes
font_01_sfnt_off000072c3.bin
fc4b95d1747256144f8a395b51d47c764ebb70eca3b7de6818eed7da8a77860f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 9892 bytes

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