Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2cf92d89640cb03…

MALICIOUS

PDF

72.7 KB Created: 2021-02-08 03:04:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c09c50837387d18fbc55472327bcc42b SHA-1: e120bbbc6db1572b7ed587e16755df1a9f847735 SHA-256: d2cf92d89640cb03902292aa3735dbaaebda695f610b8b5efe344261ccb93087
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'jottigo.ru', which is likely used to host a phishing page or download further malicious content. The document body, though heavily obfuscated, suggests a lure related to 'All air system ppt', indicating a potential social engineering attempt.

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://jottigo.ru/123?utm_term=all+air+system+ppt PDF link annotation
    • http://lnstagram-blue-badge-form.com/88970478594ucvur.pdfIn PDF document text
    • http://secureappeal.com/robotics_notes_ps4_vs_switch0w78u.pdfIn PDF document text
    • http://fastpeysistem.online/the_dead_sea_scrolls_deception5ohlt.pdfIn PDF document text
    • https://cdn.sqhk.co/pifonode/cii7zmP/22922883329.pdfIn PDF document text
    • https://cdn.sqhk.co/telupiza/jj3pgeC/gaxolawawubodofepave.pdfIn PDF document text
    • http://hookup153.online/avengers_endgame_subtitles_english_full_moviehtxxn.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/lhfheja/juventus_vs_sampdoria_channel_usa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/94974538318.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/95461946372.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/pantone_blue_color_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/rajopavizaja.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/49544352497.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/wurikasebunepekureto.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/ejercicios_movimiento_rectilineo_uniforme.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/62820705471.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/feneromeposafatuzidir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D6 4628 bytes
SHA-256: 744f695880d0cfdacd4cd23879945855c5ea759181065b399bc4a80756128f18
font_01_sfnt_off0000e287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE287 10820 bytes
SHA-256: 5d97d15bb04e58e448ff8be5c492178ff2e35231e1b936138e36905dc7371cdb
font_02_sfnt_off00010795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10795 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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