Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87467ccebdfc0f4…

MALICIOUS

PDF

49.6 KB Created: 2020-11-18 14:47:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 80fc2d1e9fd404bc836dfb6b2da964e9 SHA-1: 03f54ccc5af039931e51c4fb5315a546611f306f SHA-256: c87467ccebdfc0f4b5d191fb7506cccfa3cb4ffa4f3591555283b759a5edb921
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a link farm, indicating an attempt to host multiple external links. One of these links, 'https://trafffe.ru/aws?utm_term=lagu+123+em+yeu+anh', is flagged as suspicious. The presence of a ML classifier flagging the PDF as malicious and ClamAV detection further supports its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an intent to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7847

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/aws?utm_term=lagu+123+em+yeu+anh PDF link annotation
    • https://xolisibi.weebly.com/uploads/1/3/4/4/134462635/bevedo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c70d172b-6516-47f0-bafc-73822069c944/reramamutegojiferalana.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/automatic_call_recorder_pro_free_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/the_illusion_of_life_disney_animation_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bidejonixom/58379515690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae405622-ef85-40a7-8f3d-17f62c58896d/nezenuzekivo.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/woleriz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36cf7bfb-8778-45d9-8d76-be0d1001076e/girl_scout_brownie_song_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/dnd_city_map_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/xajizumarolurokogis.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/43804560009.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/56681521722.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/49128891224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f699859e-41f5-4109-aa4c-2e8c94cd1cf7/wifam.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/taquizas_elteco_street_tacos.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/53967704060.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b7e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7E0 5184 bytes
SHA-256: 881928e9f71f875971ed5743afe8d59b35467b290b2a48d1d0c9b4ba178fa836

Open this report in the interactive analyzer, or submit your own file for analysis.