Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e387999a11fcb6…

MALICIOUS

PDF

78.4 KB Created: 2021-03-28 22:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef98b5026db069d7f06b508124c38835 SHA-1: b02defffb56dfbee4d19ce306427bad2f42ba75e SHA-256: 42e387999a11fcb6682be80f1e94bcd86ee41296b6ac568ef57ec8e0e1255780
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user. The document body, though heavily obfuscated, suggests a lure related to academic resources, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://lozipotod.ru/award?keyword=english+morphology+and+syntax+pdf
    • https://static.s123-cdn-static.com/uploads/4503197/normal_6006be932ddfc.pdf
    • http://nesorus.mywebcommunity.org/textbook_of_veterinary_bacteriology.pdf
    • https://cdn.sqhk.co/bulenupulabo/dUihJig/81738757729.pdf
    • https://cdn.sqhk.co/novigigexuxo/hc9uhbY/lg_smart_diagnosis_dryer_cl.pdf
    • https://cdn.sqhk.co/zifiguwosu/hnjaDrI/sujibuj.pdf
    • https://static.s123-cdn-static.com/uploads/4365613/normal_5fce6a71843de.pdf
    • https://cdn-cms.f-static.net/uploads/4388824/normal_6026607210ce2.pdf
    • https://cdn.sqhk.co/tibakekavero/jcgevLI/gatevogaxava.pdf
    • https://cdn-cms.f-static.net/uploads/4487626/normal_603d2dbe5e933.pdf
    • https://cdn.sqhk.co/nuzinipaz/gdictfQ/satanivuwowagi.pdf
    • http://katipef.medianewsonline.com/50852728335.pdf
    • http://duwelizub.mywebcommunity.org/vifapopuz.pdf
    • https://static.s123-cdn-static.com/uploads/4455197/normal_5fe3370486703.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wutukiruwis.rf.gd/bronsted_lowry_theory.pdf
    • https://s3.amazonaws.com/dixaleko/29273655159.pdf
    • https://s3.amazonaws.com/jivagajamav/23560235348.pdf
    • http://danebusuji.onlinewebshop.net/jurnal_politik_etis.pdf
    • https://s3.amazonaws.com/pasutiz/solidworks_edrawings_mac.pdf
    • https://s3.amazonaws.com/tutasujal/video_er_for_android_any_website.pdf
    • http://medetoti.epizy.com/heroes_of_the_storm_maps_guide.pdf
    • http://makonejun.rf.gd/vocabulary_context_clues_worksheets_9th_grade.pdf
    • http://kapirexazi.onlinewebshop.net/eft_emotional_freedom_technique.pdf
    • http://kepagewav.atwebpages.com/40095506209.pdf
    • http://tisigivikevutik.rf.gd/witabakuj.pdf
    • https://s3.amazonaws.com/satedafadusizo/what_is_the_best_head_unit_for_sound_quality.pdf
    • http://biduxejuvelofe.rf.gd/concrete_slab_design_excel_sheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f339.bin
8d8954b1568abaecd7ad60c17ff688894cdf7639c6bb404b256da595a3c0c7c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF339 5584 bytes
font_01_sfnt_off00010622.bin
27ceb6db25e6f71f0699515ca000cb62872e09bf62ce5dc5471bbb489900c24a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10622 10552 bytes

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