Malicious PDF — malware analysis report

Static analysis result for SHA-256 c814f9e87ca4bd09…

MALICIOUS

PDF

76.9 KB Created: 2021-03-11 10:28:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d67a91d84bdf22d11d011c882158f5a9 SHA-1: 7c81d4e9d8162afd9334bbca837deeaa87389428 SHA-256: c814f9e87ca4bd095f085459c1c214105a0e901cddc1943264a06da08670933d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://golowaki.ru/123?utm_term=meditation+guided+visualization PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454562/normal_60481c4b8c59d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490365/normal_5ff255aba7c4a.pdfIn PDF document text
    • https://cdn.sqhk.co/zefafulolit/piiHFk3/sub_shops_dallas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471235/normal_5fd9658c50ca6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_602a3cb34dea5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402481/normal_5fc9e9af54f68.pdfIn PDF document text
    • https://cdn.sqhk.co/lasanamemego/jCxM8Sa/gestion_d_une_entreprise_de_la_construction_asp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425238/normal_5fc92fddb9a79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_603fdeb61185a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383797/normal_604544f11a7df.pdfIn PDF document text
    • https://cdn.sqhk.co/dekaroku/IGje9mo/catch_chocolate_bar_advert.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459941/normal_6014d56b5905c.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/84ijjgh/milimajomifazaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/sogunixe/jShh6gf/crazy_zombies_2._0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fojoxolizono.rf.gd/siruvarowufomofifij.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/happy_birthday_to_you_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/suviz.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/93908660115.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/doxetalepigoxiw.pdfIn PDF document text
    • http://safuzidavoje.rf.gd/87515642056.pdfIn PDF document text
    • http://pavasokunise.epizy.com/rikutubedosoxevisire.pdfIn PDF document text
    • http://zakivijojinikij.epizy.com/boyz_to_men_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/jolajilizavovupamuja.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/96643898357.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/37345366402.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/xanuwigegadeweletel.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/best_games_2020_ign.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_off0000ee43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE43 5012 bytes
SHA-256: e0a1fc768cf096235fb3d53118db80036bf55cdb70a9e1876b70adbdf872ac9e
font_01_sfnt_off0000ff7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7D 10852 bytes
SHA-256: b3c5d753da49153395081ff5ffa36ad3c6d28d113d63363c86d7975f1c96a8cc

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