Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5e8f40d2e3274d…

MALICIOUS

PDF

92.1 KB Created: 2021-03-17 04:21:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 414e2eaa6ea8b22533e34992641dd64f SHA-1: 287a7de8fca3e2647b8489c4a230eecad88b1895 SHA-256: eb5e8f40d2e3274d0d6a5be5697aad04c8e839ee7369b08c9825d0ccd61625b8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. 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 the presence of external URIs are indicative of a social engineering attack, likely spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/strik?utm_term=how+to+influence+your+friends+book
    • http://vutomifewomisub.iblogger.org/berserk_volume_3.pdf
    • http://perevod24-card2card.site/english_horror_stories_downloadims7q.pdf
    • http://daliadiago.com/life_reptiles_and_amphibians_worksheett5iz7.pdf
    • http://wersita.fun/fugl_meyer_assessment_upper_extremitykfmyv.pdf
    • http://legendbilisim.com/stack-on_armorguard_24_gun_safe_reviewszx1gi.pdf
    • http://ch-redirect.icu/pokemon_planet_shiny_hackhz1ya.pdf
    • http://wewudiwiwojob.22web.org/what_is_the_difference_between_validity_and_reliability.pdf
    • http://gakarefutejet.iblogger.org/guwozib.pdf
    • http://realnoe-obshenie.online/85129819924hedut.pdf
    • http://form-copyrightservices.com/where_did_the_stock_markets_close_todayuhrb5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kasuwevovog/82574215836.pdf
    • http://vedapasu.epizy.com/love_calculator_prank_app.pdf
    • https://s3.amazonaws.com/belopudevuzuza/balde_de_cerveja_personalizado_para_formatura.pdf
    • http://bimofexosuf.rf.gd/81292708313.pdf
    • https://s3.amazonaws.com/sezewu/kofisodokasiwima.pdf
    • http://wuluzakasuw.epizy.com/fidelity_national_information_services_inc_annual_report.pdf
    • http://bapinusajix.rf.gd/72362198597.pdf
    • https://s3.amazonaws.com/tumasun/felavotiwetagojupojusur.pdf
    • https://s3.amazonaws.com/bevekizadoxuj/19786985392.pdf
    • https://s3.amazonaws.com/sefukirexuwekij/95025465790.pdf
    • https://s3.amazonaws.com/zexozavo/mikilirulowuwimexafu.pdf
    • https://s3.amazonaws.com/wapabefizosumi/35880724652.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_off00012a7d.bin
cf50219a1732f9dfa67375130c4c0b35846b2dd15dbd7d3d4834cefab52a6247		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7D 5164 bytes
font_01_sfnt_off00013c39.bin
388e4f4bddb909fffc13c22b3f4e4c8bb60ef0ddf7987c3e9b3f96306de93aaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C39 10956 bytes

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