Malicious PDF — malware analysis report

Static analysis result for SHA-256 113816fce4b9de42…

MALICIOUS

PDF

96.1 KB Created: 2021-04-11 09:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2445841f2e196c0935baddc8ef31041c SHA-1: e6a7ac7a078d5805203ea2c41d81609cffc78fec SHA-256: 113816fce4b9de42ddde962ba2d09f79f3617869433ef244d1318dbf8b74df35
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'tyranids kill team' and embeds a URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/strik?utm_term=how+to+play+tyranids+kill+team
    • http://lotupojaxuvutix.mygamesonline.org/axial_flow_fans_and_ducts_wallis.pdf
    • http://tonojodozif.mypressonline.com/wrought_iron_fence_designs.pdf
    • http://kobivoweder.mypressonline.com/ncert_mathematics_book_for_class_7.pdf
    • http://finipupote.mywebcommunity.org/gre_math_practice_tests.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://510b81f6-be4e-4e40-9acf-3f60af495837.filesusr.com/ugd/5f226b_7e29e8c7eb3f460184d57630bc98ae19.pdf?index=true
    • http://gasededal.epizy.com/mawusodeminesuw.pdf
    • http://sitiditazowoz.rf.gd/12427576294.pdf
    • http://gapowap.epizy.com/68224031110.pdf
    • https://uploads.strikinglycdn.com/files/f6cf683a-f195-4115-8f06-2f41284f6d55/dorazub.pdf
    • http://wulitebajanuba.rf.gd/33355280432.pdf
    • http://gunexukod.epizy.com/46048374981.pdf
    • http://pasezisa.rf.gd/solid_waste_management_project_proposal.pdf
    • https://uploads.strikinglycdn.com/files/8f02ca9e-cd24-4b01-bb05-097bffc191d4/infinix_note_8_price_in_pakistan_2021.pdf
    • https://665985ba-8e9f-4173-b993-17a3090d61d7.filesusr.com/ugd/08421c_c75d7496eab4460eaf980c920b652d9d.pdf?index=true
    • https://87deab66-c645-46c6-955a-dbc2758d34a6.filesusr.com/ugd/302fc9_c86d899713024fa8848da5e76997eff8.pdf?index=true
    • http://navasegekukuj.epizy.com/body_systems_review_worksheet.pdf
    • http://nudagimanefej.atwebpages.com/69965393442.pdf
    • https://uploads.strikinglycdn.com/files/94d53b05-6ae7-4c2d-9934-69a72c9db298/xojiduguxanotuzuf.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013add.bin
954c5243b68c27fe165ad7cef37f06cf0abafded7f8eca085eb660735a19842c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13ADD 5324 bytes
font_01_sfnt_off00014cfa.bin
28b99ec416e86b314c3cff42c9b2b3a949fd7ca70402bc594ab7e5add2eb0640		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CFA 11132 bytes

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