Malicious PDF — malware analysis report

Static analysis result for SHA-256 dadf8a5c0dce8164…

MALICIOUS

PDF

73.9 KB Created: 2021-04-19 22:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 710d1bf3b96771ea8e16bafece462dab SHA-1: c514655071753ec19112a8a1a763a5468d4b4c82 SHA-256: dadf8a5c0dce8164c8992d9aa63984d81a8257810faf58007076375db4bbaeb4
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a phishing lure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, consistent with phishing or malware distribution.

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://ponafet.ru/strik?utm_term=should+i+invest+in+real+estate+2020 PDF link annotation
    • http://palejep.22web.org/bootcamp_windows_10_setup.pdfIn PDF document text
    • http://xovekofetovo.66ghz.com/zininififeze.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/bulolimepol/36507714591.pdfIn PDF document text
    • http://baponexar.epizy.com/32492253625.pdfIn PDF document text
    • http://naxolop.rf.gd/how_to_download_google_maps_offline_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/palayathu_amman_movie_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/nukone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/032804fa-74d7-4fed-9a60-4e181b1cdd94/manuxabejafetewovup.pdfIn PDF document text
    • http://tokewaperomuveb.epizy.com/87262972697.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/jaynes_2003_probability_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/24484083580.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/gobanoxupisuluj.pdfIn PDF document text
    • http://zagebixomibolo.rf.gd/chinua_achebe_collected_poems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2be28ac8-efa7-4e7c-b1ee-71685cc196e7/kowudatugibabelunodot.pdfIn PDF document text
    • http://xidawowikobotof.rf.gd/anemia_drepanoctica_pediatria.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/52322931595.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/2016_movies_tamil_play.pdfIn PDF document text
    • http://werekixaw.epizy.com/bed_wars_mod_apk_1._5._10.pdfIn PDF document text
    • http://roboketisi.rf.gd/wuvezirirobe.pdfIn PDF document text
    • http://fizoluzakazuxaw.rf.gd/lawurujizetok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e54c3679-0338-4854-961a-01e7074de017/fedex_customer_service_number_brooklyn.pdfIn PDF document text
    • http://gevutolexufa.epizy.com/dafarewadefitod.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_off0000e4d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D2 5348 bytes
SHA-256: 25e55e9c5633cd298cbe35676bdd61d9059f53384942722f13abfdeba8430dff
font_01_sfnt_off0000f6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F6 10364 bytes
SHA-256: e0574a9fa7026714e0aad6ab4fada4f676f3b2fd99b1f8db1a4d0cc075067a8a

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