Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b5e0a18b9abb67…

MALICIOUS

PDF

76.0 KB Created: 2021-05-08 14:52:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 39204940241c8b93afe44ffdcc3f1781 SHA-1: eba4aa37e805d0f405a8e28c376036b608180868 SHA-256: 79b5e0a18b9abb675332725f1ba5284aa5c96ad987a9acda61b437daf8e5a7d2
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dugedepap.ru/strik?utm_term=what+do+you+need+to+renew+your+cdl PDF link annotation
    • https://cdn.sqhk.co/nefikelifu/Agehfii/risibakonivobabu.pdfIn PDF document text
    • https://cdn.sqhk.co/vugasoveg/gf18geq/63598761752.pdfIn PDF document text
    • https://cdn.sqhk.co/sudidoxa/zvTighf/xolevasusip.pdfIn PDF document text
    • https://cdn.sqhk.co/giwibilawa/hag2OKE/xijonobi.pdfIn PDF document text
    • https://cdn.sqhk.co/giwitosak/hhfiijf/4runner_nightshade_vs_trd_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/zhabjaD/ketalugema.pdfIn PDF document text
    • https://cdn.sqhk.co/sesakiwewe/b5he1ia/20279929288.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/jchb173/mosibekajudafixalan.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/D8ifij3/27208998277.pdfIn PDF document text
    • https://cdn.sqhk.co/kosenopelid/jhcFQns/vikamavosegex.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/cjtgcgh/75809995657.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzujugasije/XiaB8Ql/continental_drift_review_worksheet.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/godoremitiwuja/toshiba_satellite_cd_rom_driver_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a20ac75-c8c5-48cd-9573-4f93a570f29c/what_fuel_does_a_stihl_trimmer_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08ac791b-2f8a-4a9d-8509-7bb422699edb/sevara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b2c5464-de4d-4801-9d41-95d4b5e28a0e/54300764947.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/lorufevijaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0f17202-60d7-42a0-b32a-841d7a4b76cf/5241688714.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/baby_onesie_template_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bcc5648-cbe8-4395-9b8e-6f6ed5fdb43b/private_practice_cast_season_3_episode_16.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDA 5056 bytes
SHA-256: ef7c02948377420a690dbf10368be2b84ee7854ff1023259193f6c4684de13ee
font_01_sfnt_off0000fd20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD20 11012 bytes
SHA-256: 6435a21e4f9cefc2665b32400be93f088cdcb4bddeed00445e6691bdff9d6832

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