Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c72fd243dc5874f…

MALICIOUS

PDF

87.9 KB Created: 2021-03-17 19:27:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 25950a3e51d1a0767c8f2a0297bab4d4 SHA-1: 9b958b675324c9bd334b68d42a692ed82b75b9f7 SHA-256: 8c72fd243dc5874f20a038246f95d82e0e3e3426584ee6aa1c28d38ce890a411
96 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. 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 0.9996

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://pelibifir.ru/award?keyword=pdf+to+word+machine+learning PDF link annotation
    • http://hookup671.site/josamitenegumujofer1q46.pdfIn PDF document text
    • http://aycotoro7.xyz/66285441837012r2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407066/normal_6016fd7962bd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485930/normal_5fdae8dab5f2f.pdfIn PDF document text
    • http://sallehq.xyz/mufoporadaratutilupe2rizq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408340/normal_602e5af520c23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385230/normal_6039df8b228e3.pdfIn PDF document text
    • http://parkji5x.xyz/kidekovinikijemepofpc83w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vatimofaxemog.rf.gd/46184779884.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/58104718975.pdfIn PDF document text
    • http://lewafozilit.epizy.com/percy_jackson_graphic_novel_collection.pdfIn PDF document text
    • http://sofaxekuru.rf.gd/20122900896.pdfIn PDF document text
    • http://tosizufokora.epizy.com/hd_anime_wallpapers_1080p_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/5399812838.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/pamaxetofo.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/jamosodamalumuwozidalal.pdfIn PDF document text
    • http://ganatovofafad.rf.gd/cardfight_vanguard_game_pc_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/tamil_bass_boosted_songs_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/amazon_prime_brasil_formas_de_pagamento.pdfIn PDF document text
    • http://lopumupukerodu.epizy.com/linear_algebra_with_applications_9th_edition_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/97275276005.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5B 5140 bytes
SHA-256: f03c800017370042935863fecef5e3f9d74bf563375d7d766966bbfe9fe69d1a
font_01_sfnt_off00011cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB5 11552 bytes
SHA-256: 0694d86251de381e362e76af325bf00dd321d065dce70f199e1d8b02ad4c627b
font_02_sfnt_off0001442c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1442C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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