Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5e9f99c391b243…

MALICIOUS

PDF

78.4 KB Created: 2021-02-21 03:17:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d9fc17e7f78fd5e76be10efbe1ed2f1 SHA-1: 5c84b931b64821c448e34d09ef5beddf2dab804a SHA-256: 2d5e9f99c391b24332f21f86f9ea27fb8c860e8f19c0ed25a0825055e7afe416
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to 'https://druttle.ru/wix?keyword=morse+street+public+school', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure and content suggest it's designed to exploit users by presenting a seemingly legitimate document that redirects to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=morse+street+public+school
    • https://cdn-cms.f-static.net/uploads/4409256/normal_600ea730c1a33.pdf
    • https://cdn.sqhk.co/tatonabufule/ac3iegh/pasenase.pdf
    • https://cdn-cms.f-static.net/uploads/4486566/normal_5fdbf31c43790.pdf
    • https://cdn.sqhk.co/remezebona/gSiefig/hockey_playoff_tv_schedule_2019.pdf
    • https://static.s123-cdn-static.com/uploads/4369777/normal_5ff67690f3038.pdf
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fc6031b0272f.pdf
    • https://cdn-cms.f-static.net/uploads/4466411/normal_60309a021970a.pdf
    • https://cdn.sqhk.co/rivotoxupow/djfUhfn/sim_card_toolkit_invalid_input.pdf
    • https://cdn.sqhk.co/fefamuve/IghTwgc/lyrical_dance_music_video.pdf
    • https://cdn-cms.f-static.net/uploads/4466391/normal_6012dfc9c6762.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://bebidexaroz.rf.gd/51155977864.pdf
    • https://s3.amazonaws.com/gateme/73301517468.pdf
    • http://diwisowaf.rf.gd/18535304432.pdf
    • https://s3.amazonaws.com/putelekireza/nukodopilebupe.pdf
    • http://rowomikaxanuga.rf.gd/lavirufisilijap.pdf
    • https://s3.amazonaws.com/rojalexipokadaz/guidelines_esophageal_varices.pdf
    • http://gezojetisab.epizy.com/rosenotokiwokowid.pdf
    • http://mijikudetixo.epizy.com/health_education_handout_template.pdf
    • http://gatakokuto.rf.gd/79992314898.pdf
    • http://xadeboni.epizy.com/eurosport_2_france_tv_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea39.bin
e6aac1e4a5377f668e38fcbefd795c5d03d1c466c76f7c64fb6cfc351cd37e0c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA39 4732 bytes
font_01_sfnt_off0000fa6b.bin
2da07e076b1481f3882ea53b74a0e5eaef4f76ed94f12245d0a8a21496a40923
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6B 10460 bytes
font_02_sfnt_off00011e1b.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1B 4324 bytes