Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c741e9a3515051…

MALICIOUS

PDF

34.7 KB Created: 2020-11-05 19:37:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f32d319b4079e5fd4c31d7283959786e SHA-1: ac32e92a30ff8ed57e78c647a2551da0b7de3d7f SHA-256: 52c741e9a3515051a7bd86e0a74c5a8d3486be28862a437aafcabecad9a364d5
94 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO spam campaign. The primary URL, https://traffking.ru/aws?keyword=get+fit+stay+well+4e+pdf, is likely the entry point for this campaign. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, possibly involving JavaScript for redirection or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/aws?keyword=get+fit+stay+well+4e+pdf
    • https://rajerese.weebly.com/uploads/1/3/4/3/134387708/addc8768c.pdf
    • https://direwuberegenis.weebly.com/uploads/1/3/4/3/134361890/bejogivefo.pdf
    • https://paxowamowutujaf.weebly.com/uploads/1/3/4/3/134322095/fowojagonoditar.pdf
    • https://jepupuwupojuv.weebly.com/uploads/1/3/4/4/134481076/1887573.pdf
    • https://midizovusataleb.weebly.com/uploads/1/3/4/6/134618082/d6685a16127e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jenagubadopi/essential_oils_and_their_uses.pdf
    • https://s3.amazonaws.com/kufazete/yugioh_duelist_of_the_roses_cheats_names.pdf
    • https://s3.amazonaws.com/kokesatodixon/best_mission_order_for_mass_effect_3.pdf
    • https://s3.amazonaws.com/zetare/13532444985.pdf
    • https://s3.amazonaws.com/gupuso/80329680319.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e66.bin
61aef75b80dab2f38ccbfc46c8f42a68bad8ec3c761990c295f3e481351313a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E66 5252 bytes

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