Malicious PDF — malware analysis report

Static analysis result for SHA-256 3652092d2cd7351f…

MALICIOUS

PDF

89.1 KB Created: 2021-03-21 08:01:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82715dd2f39a6ade567956a8f6e8ec3c SHA-1: 5034c4b5f1a3eeee72f52d347e2adeb306b430d2 SHA-256: 3652092d2cd7351f64bdce64487c022612d9a3bf0521a2ef12b62c2b73360cd6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to 'school uniform' and 'laburnum', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/123?utm_term=laburnum+school+uniform
    • http://zepawagir.iblogger.org/tadodisew.pdf
    • http://fajutixosisi.22web.org/88936352468.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wirileso.epizy.com/how_to_setup_bluetooth_on_alpine_radio.pdf
    • https://s3.amazonaws.com/tezude/the_spectacular_now_full_movie_300mb.pdf
    • https://s3.amazonaws.com/luropi/85477571599.pdf
    • https://s3.amazonaws.com/juzewojavomofew/65366281478.pdf
    • https://s3.amazonaws.com/jajuzasalikirut/fajojetezazejobekige.pdf
    • https://s3.amazonaws.com/vososasoxumete/76506895861.pdf
    • http://zubikexef.rf.gd/luxation_acromio_claviculaire_traitement.pdf
    • https://s3.amazonaws.com/tesotiwapax/qualitative_data_analysis_definition.pdf
    • https://uploads.strikinglycdn.com/files/19d03cfe-06f0-4953-b497-4ba04fcf13c4/76052419156.pdf
    • https://s3.amazonaws.com/lopadivupudexa/42055234472.pdf
    • https://s3.amazonaws.com/dixaleko/dotufozevoni.pdf
    • https://uploads.strikinglycdn.com/files/e94cc41e-0737-4ea6-af96-dd29d5a2efc8/casio_g-shock_ga-100-1a1_watch_review.pdf
    • https://s3.amazonaws.com/xomepixo/fuvusa.pdf
    • https://s3.amazonaws.com/pulavokaxe/dell_latitude_e6410_key_replacement.pdf
    • https://s3.amazonaws.com/viromibukoleliw/94771624203.pdf
    • https://s3.amazonaws.com/lovetijif/64767355264.pdf
    • https://s3.amazonaws.com/gusule/318146682.pdf
    • https://uploads.strikinglycdn.com/files/04241d09-d8c3-4d76-9478-e467b46f1d35/vampire_diaries_cast_season_4_professor_shane.pdf
    • https://s3.amazonaws.com/fajeloninesitel/que_significa_la_palabra_movimiento_rectilineo_uniforme.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011dc0.bin
33a9346241bba3f818241bdb09bd35abd2562ad9edf73b23f3c1cd1b615071b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC0 5200 bytes
font_01_sfnt_off00012f48.bin
5d99bf1cff34a25e0a9b39fc64d805cd1fc07832cdd8262c8fc637b9839dcf57
pdf-font-stream PDF embedded font (sfnt) at offset 0x12F48 11732 bytes