Malicious PDF — malware analysis report

Static analysis result for SHA-256 18afddccb31266f6…

MALICIOUS

PDF

92.8 KB Created: 2021-03-02 02:31:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4dde32c52c7cad2e7168a471c48fac1d SHA-1: 258ae480dbd55366f040b85d2826b2e212137814 SHA-256: 18afddccb31266f6590d696a4391fd5f86237acadee0afaf8f93e596ab5383c2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to deliver a malicious payload or phish for credentials.

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://jacksth.ru/strik?utm_term=what+is+the+difference+between+t5+and+t6+aluminum PDF link annotation
    • https://solugelefeko.weebly.com/uploads/1/3/0/7/130740562/binebi-sufibalo.pdfIn PDF document text
    • https://lazofakivew.weebly.com/uploads/1/3/1/4/131406449/noxivirelesasavisali.pdfIn PDF document text
    • http://spindlndou.space/trigonometric_identities_powerpoint_presentationuhjqy.pdfIn PDF document text
    • https://betijefozivur.weebly.com/uploads/1/3/0/7/130776077/noronat.pdfIn PDF document text
    • https://xefegirabiveg.weebly.com/uploads/1/3/0/9/130969499/6763728.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/dabivozapet.pdfIn PDF document text
    • https://wobosiwax.weebly.com/uploads/1/3/1/6/131607505/daledomob.pdfIn PDF document text
    • http://milky-rp.space/amritvani_ram_sharnam_free7om4u.pdfIn PDF document text
    • https://gavemipaxok.weebly.com/uploads/1/3/2/6/132680822/3d7b6.pdfIn PDF document text
    • http://rigudozefogo.mypressonline.com/casio_w-735h-1avef_manual.pdfIn PDF document text
    • http://manuximaxemeje.scienceontheweb.net/roadmaster_bike_womens_24.pdfIn PDF document text
    • https://xikematevi.weebly.com/uploads/1/3/4/3/134392378/damotirago_luvitigusamoj_pelajoda.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/sifawekujiki/graphic_design_courses_new_york.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/17118957217.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/dunediseroruxu.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/terogosuzado.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/momudotubajanoso.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/naspghan_guidelines_cyclic_vomiting_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/why_are_informational_texts_important.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_off00012cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CBB 5784 bytes
SHA-256: 44df3ad52a0fe1ddb2d303c9dd70e60426fd3bdec5686268488caca275ab76bf
font_01_sfnt_off00014064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14064 10760 bytes
SHA-256: 889f82ef81b72b695027e79b8aabe2c6d1e7e6df61201355078e33b92b70f22a

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