Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88b78b53cad71b7…

MALICIOUS

PDF

67.2 KB Created: 2021-04-30 22:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6f65c0f69ab0f664133f411b5e7ea9b9 SHA-1: b0b46954f8f7308a98a4d4346dad1ec2976949cd SHA-256: f88b78b53cad71b763895e8563dbee1b376850ecab20d99335210ce096d46dbd
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://ponafet.ru/strik?utm_term=parts+of+speech+worksheets+pdf+grade+2 PDF link annotation
    • http://kopuvimu.scienceontheweb.net/extron_annotator_300.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/malinowski_argonauts_of_the_western_pacific.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/aparato_tendinoso_de_golgi.pdfIn PDF document text
    • http://tulusujubige.mygamesonline.org/bnf_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/e2r5sHO/riders_on_the_storm_meaning_lyrics.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/adidas_apple_watch_band_38mm.pdfIn PDF document text
    • https://kewalagaxed.weebly.com/uploads/1/3/4/8/134864879/kosagogabaz.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/CtgeAkE/xujugu.pdfIn PDF document text
    • https://rokaxitifefisol.weebly.com/uploads/1/3/4/0/134040577/fcb1ccbc92b.pdfIn PDF document text
    • http://fosipuzo.mypressonline.com/zogesixewalot.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/mutirexa/australia_awards_referee_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/tata_sky_channel_number_list_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/votavupewep.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/48324468979.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/kevezukulotovajenabex.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/guxemapa.pdfIn PDF document text
    • http://jifimurosesapu.atwebpages.com/anabasis_greek_text.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/how_to_run_diagnostics_on_maytag_dishwasher.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_off0000ca14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA14 5676 bytes
SHA-256: 2b7849d74a4e9f91118634c1b9f722da8397ec09eeb2cdb6c7e1fd7032d3e405
font_01_sfnt_off0000dd72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD72 10008 bytes
SHA-256: 8ff712863394f27bbdb82ffb2124a980622a81f90b2b91c510df099432e728ff

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