Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb2e4800a0cc609…

MALICIOUS

PDF

78.4 KB Created: 2021-04-09 07:57:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 804f1335d8d062a8ff7bdbaff23152fd SHA-1: 21b15f3559f8a4a3ba65bbe0d86bb1dddf0e4998 SHA-256: ccb2e4800a0cc6098aa22405c3d444cc3b04a239aa74d954790f55899e2f9862
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, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the presence of external URIs and the ML detection suggest a phishing or credential harvesting 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://gimoguvi.ru/strik?utm_term=defiant+digital+timer+instructions PDF link annotation
    • http://ziwewixowele.sportsontheweb.net/64152801862.pdfIn PDF document text
    • https://zotaboxobur.weebly.com/uploads/1/3/6/0/136091523/d224bc3.pdfIn PDF document text
    • https://sewizafisebe.weebly.com/uploads/1/3/1/4/131437566/jipuvesaxiviji-xinose-nubiba.pdfIn PDF document text
    • http://belepebo.mywebcommunity.org/dejotebapamez.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/onkyo_tx_nr636_specs.pdfIn PDF document text
    • http://sewukagazub.mypressonline.com/calendar_2020_marathi_kalnirnay.pdfIn PDF document text
    • http://fuxofexafot.iblogger.org/duxuse.pdfIn PDF document text
    • https://jirogadipew.weebly.com/uploads/1/3/1/6/131606393/lakut-sonurofil-dokakaxage-vetikofala.pdfIn PDF document text
    • http://noxetoporobosek.sportsontheweb.net/catan_guide.pdfIn PDF document text
    • https://luwujapi.weebly.com/uploads/1/3/4/7/134751522/furimobuv_muliporikorad_sapaketinidug.pdfIn PDF document text
    • http://jarevine.mywebcommunity.org/fanafebidoxuxezapoduwabib.pdfIn PDF document text
    • http://sakepugikunon.mypressonline.com/33854767498.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ximusurugonis.epizy.com/apset_model_papers.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/balanced_diet_information_wikipedia.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/pugibolowufe.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/28926172120.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/aashiqui_2_video_song_pagalworld_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/cloud_native_application_architecture_diagram.pdfIn PDF document text
    • http://pususarejopo.epizy.com/browser_automatically_opens_website_in_android.pdfIn PDF document text
    • http://mevusajilitum.rf.gd/lonubunudanexovemojetoxu.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_off0000f3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EF 5340 bytes
SHA-256: 46676724f4309a17192aa1961bbd668fc6f182e3a64f8ff964de640fe004dcca
font_01_sfnt_off00010611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10611 10944 bytes
SHA-256: f434ac455a4c1d72d30ae49a8ac8f794522021f43217c48289de29cc36e1e5de

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