Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26f261754a79e00…

MALICIOUS

PDF

86.1 KB Created: 2021-04-05 00:35:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73c399b29817fe9a9b5794b450d397d2 SHA-1: 7d2ef1fd07a795b44a4e114b51858626c05371ab SHA-256: f26f261754a79e00460d974a376adf76fc9be110f339370ea15d07690e2b663b
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to deliver a malicious payload or phish for credentials.

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://pelibifir.ru/123?utm_term=cloning+dolly+worksheet
    • https://manasowugarubib.weebly.com/uploads/1/3/0/9/130969960/1022782.pdf
    • https://kenitavujene.weebly.com/uploads/1/3/5/9/135977886/c94084a1d55bb.pdf
    • http://copyrightsafetyhelps.com/les_miserables_castatgz2.pdf
    • http://jinokonur.22web.org/35042898901.pdf
    • https://kobekasi.weebly.com/uploads/1/3/4/5/134588699/kizijoligukavojo.pdf
    • http://shopeuro.pro/91760269596kys8i.pdf
    • http://martans.space/724193953157nsjz.pdf
    • https://cdn.sqhk.co/sitopizol/OO7GicI/43403568582.pdf
    • https://mefusinumobidal.weebly.com/uploads/1/3/4/6/134679396/91174032e61.pdf
    • http://retakajuzupix.22web.org/78029175961.pdf
    • https://cdn.sqhk.co/vapumojemov/Vjisigg/basketball_hoop_shooting_game.pdf
    • http://wisecreditscore.info/46148706069exwr5.pdf
    • https://zolaverapudo.weebly.com/uploads/1/3/0/8/130874102/buvit.pdf
    • http://learn.genetics.ut
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/84f95279-32c8-4912-8e96-3c9b8fcdad10/20607374076.pdf
    • http://fijazatomowov.epizy.com/murufeboros.pdf
    • https://uploads.strikinglycdn.com/files/a7b41a41-4c14-4a5f-ae8f-7f58c4ea5725/vw_service_gift_card.pdf
    • http://fofuxolisemaxim.epizy.com/android_wear_smartwatch_with_heart_rate_monitor.pdf
    • https://uploads.strikinglycdn.com/files/0f9168fe-52db-4c8b-95eb-fff1fdf2e64e/belkin_n750_manual.pdf
    • https://uploads.strikinglycdn.com/files/25e6561b-fcd1-495d-b2dc-14f93d5d8a82/rubobibaxogepunat.pdf
    • https://uploads.strikinglycdn.com/files/d1d818d7-5da5-4b70-a2b7-491de3bd8be2/tosunawawebotilonasuneb.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_off000116bf.bin
46d922c0e0dffc3494fb4dd9c3c07a8f594bc0f318c44b242c1f942c5e9fb647
pdf-font-stream PDF embedded font (sfnt) at offset 0x116BF 5040 bytes
font_01_sfnt_off000127f6.bin
eaa69a75c94a5f9c08cb9ded3c435ac802358884c2854a39468845fb63a8d831
pdf-font-stream PDF embedded font (sfnt) at offset 0x127F6 10312 bytes