Malicious PDF — malware analysis report

Static analysis result for SHA-256 60581418a47ed535…

MALICIOUS

PDF

239.2 KB Created: 2020-08-24 15:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97b3575887d1c240d77fde27c63eccb7 SHA-1: 7d41cae101c8d83a0e15071720c201102ff944c2 SHA-256: 60581418a47ed535357b26fa3c8057f1415259f0b92561b0529c51ca1aaeffee
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL, https://ttraff.cc/pify?keyword=c+diff+guidelines+idsa+2017, is the primary indicator of malicious intent, likely serving as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/pify?keyword=c+diff+guidelines+idsa+2017
    • http://files.mylincolnmusic.com/uploads/1/3/1/6/131637218/8633970.pdf
    • http://zafabubo.streamskinz.com/uploads/1/3/2/7/132740470/vilowar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/17844871456.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/28606121882.pdf
    • https://cdn.shopify.com/s/files/1/0440/7666/2934/files/urvashi_apsara_sadhana.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/xemaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/1758/2230/files/66688522413.pdf
    • https://cdn.shopify.com/s/files/1/0434/8297/2326/files/sewujutawafevama.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2060/7900/files/58618898793.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/pdf_file_reduce_size_software.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/78722712513.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/dmv_form_mv-_82.pdf
    • https://cdn.shopify.com/s/files/1/0438/2972/3293/files/53586019349.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/garmin_gpsmap_76.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00035525.bin
c9512b788d3e66e8c9a0bde13a6c9efea4a127cc7783c30cf89cefef7efc606b
pdf-font-stream PDF embedded font (sfnt) at offset 0x35525 5288 bytes
font_01_sfnt_off0003673e.bin
d727a9b317c71253d2e804ae5c7abb965a2e47ee0e28b60fd86a763ae549aabd
pdf-font-stream PDF embedded font (sfnt) at offset 0x3673E 15484 bytes
font_02_sfnt_off000397e9.bin
6c90aeed2532b98c0a186b08cf03f887eef891cfcf73d45db200a88e759eb4dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x397E9 16488 bytes