Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0e1717e58a70ee…

MALICIOUS

PDF

74.6 KB Created: 2021-06-09 21:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 0399c04bced6aaad9bd4663c44de483a SHA-1: cefa238e0ac157865307acd8df79c5953706b33b SHA-256: 3e0e1717e58a70eebf4edec111aac2c0be4fee80395282c49c1aa93c9086ac2f
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm designed to redirect users to external sites, with one prominent URL suggesting a lure for a movie download. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. The embedded URL is likely intended to lead the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://krisoc.ru/pbw?utm_term=star+wars+full+movie+the+rise+of+skywalker PDF link annotation
    • https://tenanetudoji.weebly.com/uploads/1/3/4/2/134266315/8457783.pdfIn PDF document text
    • https://tivaxuxilo.weebly.com/uploads/1/3/4/1/134131375/7272437.pdfIn PDF document text
    • https://waxovabuwemox.weebly.com/uploads/1/3/4/5/134585519/62443fff4.pdfIn PDF document text
    • https://jinunogafexaxim.weebly.com/uploads/1/3/4/8/134884933/wubazelavoni.pdfIn PDF document text
    • https://surexirubale.weebly.com/uploads/1/3/4/0/134000129/zibutizisedude.pdfIn PDF document text
    • https://wuwixebesa.weebly.com/uploads/1/3/4/5/134506807/7513618.pdfIn PDF document text
    • https://lebivituwaw.weebly.com/uploads/1/3/1/8/131856954/timedibifoxalu.pdfIn PDF document text
    • https://jikidamasot.weebly.com/uploads/1/3/4/8/134874174/2ea477.pdfIn PDF document text
    • https://bitabado.weebly.com/uploads/1/3/1/4/131436956/roxixosadon_duziv_gubegen_delefi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b906da9-6514-4dc0-a0ac-0ecf09cac73d/what_caused_the_accident_that_killed_brandon_burlsworth.pdfIn PDF document text
    • http://biwonuv.pbworks.com/w/file/fetch/144473106/how_to_calculate_least_count_of_digital_vernier_caliper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eff7333d-d9a5-4df5-8661-19633de2c4a6/24093905399.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0e78a27-1a35-465b-a9e5-c756f179df8a/tutazopeg.pdfIn PDF document text
    • http://mogulazedub.pbworks.com/w/file/fetch/144527364/business_english_writing_advanced_masterclass.pdfIn PDF document text
    • http://sekodegaxex.pbworks.com/f/juduzapudufofo.pdfIn PDF document text
    • http://pazimonofe.pbworks.com/f/xotipolupamofo.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_off0000e644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE644 5428 bytes
SHA-256: 0a37b72ea5d7db495b4408312c1062fa2d687a2daf5401c3d66ab84bdbe5396b
font_01_sfnt_off0000f8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A7 10576 bytes
SHA-256: be9031f5d2c0e05d45ba124acd6d0807f9a5c991d60d4c3fb5d287c7b843b035

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