Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b505608fa3d71b5…

MALICIOUS

PDF

74.5 KB Created: 2021-02-24 14:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 545d29a893e9913dccab59501b075856 SHA-1: 4f3d77f8f3bb72fd13d6179ea460c1494b828180 SHA-256: 8b505608fa3d71b5263999346feafd2bc6c34697bdc6294c23d1c3cd08e60c29
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when accessed, leads to a phishing lure disguised as a printer calibration guide. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

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://leonvi.ru/strik?utm_term=how+to+calibrate+dymo+labelwriter+450+turbo PDF link annotation
    • https://cdn.sqhk.co/xufojidaju/ibMhehi/rijipojisimebebutum.pdfIn PDF document text
    • https://cdn.sqhk.co/wofamofupu/fifkbij/97318241901.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/xtFXIgc/day_r_survival_premium_apk_hack_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/napotani/pijhcig/34237914058.pdfIn PDF document text
    • https://cdn.sqhk.co/zetoreli/Xojdo6H/86624558202.pdfIn PDF document text
    • http://datab.vip/tudapidlyqlm.pdfIn PDF document text
    • http://ejqy.com/remezajuwigzybb.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/xugigabitulu/kifunodusozelimowu.pdfIn PDF document text
    • http://govezijatin.rf.gd/8585958228.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/xekekojowaf.pdfIn PDF document text
    • http://fovuxux.rf.gd/google_sheets_match_regex.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/xiwekilomuvazitowati.pdfIn PDF document text
    • http://jojerigexorow.epizy.com/rahul_bhai_name_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/agbagba_firi_yoyo_by_lil_frosh.pdfIn PDF document text
    • http://wazinupizut.epizy.com/sat_subject_score.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/rasazogevuxekigikamufegu.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/tepemuvonazimaxego.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_off0000e63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63C 5556 bytes
SHA-256: 024e93dcff7c22c2d7d72c6dfa934a03207dbb0742c82a6e6d727419cbb07aac
font_01_sfnt_off0000f926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF926 10388 bytes
SHA-256: 9411dad9600b3650d587967ae3d8e1123ced61e9e6990f66831d41d1768afe26

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