Malicious PDF — malware analysis report

Static analysis result for SHA-256 92edde7563bee525…

MALICIOUS

PDF

76.7 KB Created: 2021-04-09 16:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8da005327cf63c697738dfa733b9ac80 SHA-1: 347fac3698ae258fd2970fad561edd49f98e6732 SHA-256: 92edde7563bee525272a83643376a6cd47c61b11847810493df42faa927a00a3
96 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent, likely to redirect users to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=how+does+handwriting+analysis+work
    • http://themarkuzmusic.com/76636631974xjwb2.pdf
    • http://kitigaw.22web.org/fire_department_training_report_template.pdf
    • http://mukinumatonewo.getenjoyment.net/inspirational_quotes_about_life_and_struggles.pdf
    • http://wonder-ita.fun/dell_latitude_d820_battery_not_detectedev1sy.pdf
    • https://cdn.sqhk.co/miropefaneka/htspSCg/63571952330.pdf
    • https://cdn.sqhk.co/moserusoba/Rgchnhc/spend_approval_process.pdf
    • http://sawozuduridab.iblogger.org/best_android_phones_under_15000_in_philippines.pdf
    • http://abanca-electronica.com/wiwolegyve5.pdf
    • https://cdn.sqhk.co/dofubetu/gNjjjfE/new_house_party_decorations.pdf
    • https://cdn.sqhk.co/letowajaf/hbtGCie/wufafajagu.pdf
    • https://cdn.sqhk.co/rapawaferew/ytDihso/xoxamewowa.pdf
    • http://raisinshq.club/how_to_replace_bulb_in_ge_profile_microwavec6fq6.pdf
    • http://vumamanepu.sportsontheweb.net/42303560279.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://titugol.atwebpages.com/7437517810.pdf
    • http://dusuponugusodu.rf.gd/77708470215.pdf
    • http://risuveliki.rf.gd/gisovevaxipizulewo.pdf
    • http://zikituxepori.epizy.com/how_to_install_grohe_thermostatic_valve.pdf
    • http://nexiwamuwi.rf.gd/wuvijakozu.pdf
    • http://natelizijiliti.rf.gd/printable_bookmark_design_template.pdf
    • http://valopuloti.rf.gd/34839219197.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_off0000ef49.bin
05494bb6943c2816d9a75cc1216218661eeb90ca48ea20bcdb3a5deca9892574		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF49 5308 bytes
font_01_sfnt_off00010162.bin
e99e8032250489e1b1664ad1eb5c51a3519f07a31d31a36f8032009857624ffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10162 10696 bytes

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