Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d1d7778b40c3b3…

MALICIOUS

PDF

79.7 KB Created: 2021-05-24 01:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0e6a4a1dab0170b464a63010f05f3733 SHA-1: 753528e4964d79a16e90aa79b156bda90e8e056a SHA-256: 40d1d7778b40c3b3c94964a31106815ddbf48caf727821057e713d085ce8f9f0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a URL that is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to a popular TV show, aiming to trick users into clicking the embedded link. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=who+dies+in+cobra+kai+season+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408701/normal_5fdd40c6bd654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446924/normal_5fdb9f3193f57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485014/normal_60222ec859261.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490961/normal_606920c13f7f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479904/normal_6008a33371b05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491934/normal_60091c86c593f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373008/normal_60402f03ed54e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411917/normal_6048a4f17cb44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482631/normal_5fe408b54cf98.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/pidufozu/55124297232.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccf644e4-c24e-47be-b361-6d96fb3ce1da/the_spectacular_now_pelicula_completa_en_espaol_latino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8845ea39-1a47-4dac-97e4-800c49a8438c/janesozefulaninurimes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bc91375-a8fb-43ff-b3f3-f8dcffcd3552/45646639202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c1596c2-d505-4cd8-95d8-86b99a72363e/movies_about_the_end_of_the_world_imdb.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/42385419437.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/honeywell_oil_filled_radiator_heater_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a6c9ea4-3623-4992-b73f-8191ea0dd9ee/sigaweragubanaremuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21fcfab7-cf51-4197-bc51-18cc27923fa3/banobisotaxevagapazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6c4a243-8ec7-43e9-be69-bc5ee6c1bb8a/shoei_neotec_2_sena_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/rupetalesofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c8a8a9e-fdd4-46c6-8ffe-80f27dfb0cf2/49328684968.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 5

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_off0000f83e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83E 5344 bytes
SHA-256: d53ed7b99e0b93b3d522e3837d10c4de0fe8463d789b9009bdaf97a640a62119
font_01_sfnt_off00010a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6E 11096 bytes
SHA-256: c80874e67ff42a82760d511d88f81ff89eb1e57c54c044d9e4a6e59eeab67ad1

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