Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc8601dbca25ab9…

MALICIOUS

PDF

74.7 KB Created: 2021-02-11 20:35:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 172494f705aa4d2ef9d5c899b13ecb46 SHA-1: 698e35a214a09933feca8adc403e1af938d823e3 SHA-256: 9cc8601dbca25ab99157b925237d9ba89b4d50234482bad2049614e20d9293c8
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://jottigo.ru/123?utm_term=music+theory+test+questions', which is likely used to deliver a secondary payload or conduct phishing. The document body, though partially corrupted, suggests a lure related to 'music theory test questions'. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/123?utm_term=music+theory+test+questions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368227/normal_601b6f5fb8e64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487906/normal_600baa66c42f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459034/normal_5ff6686f35239.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367308/normal_5ff2fa139ec50.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/81518219305.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/canon_5d_mark_iv_tutorial.pdfIn PDF document text
    • http://baxajuzurajuj.rf.gd/wijemomesikidakesux.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/fun_food_quiz_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/av_player_iphone_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/faledabebukifur.pdfIn PDF document text
    • http://lepevalir.rf.gd/tevemidop.pdfIn PDF document text
    • http://redotikami.rf.gd/82808655633.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/crime_investigation_report_format.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/nepolumesepusopupad.pdfIn PDF document text
    • http://mufozugiro.rf.gd/dna_phenol_chloroform_extraction_protocol.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/ukulele_chord_chart_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/94020273097.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/68382208919.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/assassin_s_creed_origins_trainer_1._51.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/remexek.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/63108508054.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/steam_link_android_without_controller.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_off0000e90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90A 4880 bytes
SHA-256: 7943431bbbe34e24495578824d4546aee9d63a6e7716be2e185be2b6e93732cf
font_01_sfnt_off0000f9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B8 10564 bytes
SHA-256: e761a0dd081fbaa0f807eb128d33f80cf936454bca1c0399bcaf6f91790771c1

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