Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c4793eaf4a4682…

MALICIOUS

PDF

66.1 KB Created: 2020-12-17 01:03:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a302bfa3db9bc5c1c28639d42a85766c SHA-1: 92a197e28ede41b5fc27faca6c78af1e03928d66 SHA-256: 05c4793eaf4a4682a8af7502312a4b3501103d6907fff70b3a5de9fb334d7d02
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'traffine.ru', which is likely a phishing or malware distribution domain. The PDF structure and embedded content suggest an attempt to masquerade as a useful document to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffine.ru/123?utm_term=matlab+for+neuroscientists+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc58b6c2cf09257bd8b11cb/t/5fd14ab00749ac76382661bf/1607551665001/best_paintball_marker_for_self_defence.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/3d_exhibition_stand_design_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd2c30b6b03258f2f7c3b/t/5fc9da6741142a3c4b406e93/1607064168074/ironmaster_dumbbells_for_sale_craigslist.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/asean-_china_free_trade_area.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/29832091972.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fe2417e7202640eab110/t/5fc1930ecb3e0f57718b9406/1606521615747/78307319886.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/59776178839.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1c42b085bf90c0e0336d5/t/5fca906667453b32ebb6f820/1607110759040/blood_money_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/amos_fortune_free_man_questions_and_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf402145a8629dc75e214/1606284291041/zixawezuvane.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf59d49ee0f32b874afdc5/1606375900888/temogekolu.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/88757189771.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/17447792912.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/42282474703.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/carbon_copy_cloner_10._7.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce613d0356d927d7eeb529/t/5fd68ad8df2f0204c23cf951/1607895768656/album_video_songs_in_tamilrockers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30b2524b06a7eb30d4f82/t/5fd1200026f57811effc4b81/1607540737359/sonny_and_cher_show_logo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54ae52cf09257bd88a4a3/t/5fca94b27be84e581a90cf5e/1607111861482/pulifotabixumenukotimuba.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC662 5292 bytes
SHA-256: 443c2667626aa419da865b81cd6476215c8798e09acc3521857f4197a07cab32
font_01_sfnt_off0000d877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD877 10304 bytes
SHA-256: 0a88ff31ee74898da836c0f369bb640d532deeac88910eb5f471bef3931f6805

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