Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c7726c3a57babd…

MALICIOUS

PDF

90.7 KB Created: 2021-03-09 19:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 75f2ed25e73969d58225acf582cb31d1 SHA-1: 84fc2db3d52f3a7b025ccd38b6f23344a73c17e7 SHA-256: 24c7726c3a57babd039ef06aceb3ca66aee125a474556910a8d95bd1e61dc8c5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://nipisod.ru/aws?utm_term=don+juan+george+gordon+byron+summary PDF link annotation
    • http://pexulabin.iblogger.org/lolorexezakinasozeniseni.pdfIn PDF document text
    • http://usejus.pro/cyberpowerpc_mic_not_working_on_headset229o8.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/ZJhPjbr/omni_notes_sync.pdfIn PDF document text
    • https://jalusuduzewot.weebly.com/uploads/1/3/1/4/131456012/giduwegu_lonitilu_pepoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/iihwpSs/95287294044.pdfIn PDF document text
    • https://cdn.sqhk.co/makulowujip/jRhdTiB/7662593044.pdfIn PDF document text
    • https://cdn.sqhk.co/jasekazus/sgsdqie/xutosisupivopuse.pdfIn PDF document text
    • https://jiparebifipi.weebly.com/uploads/1/3/4/6/134638028/fopuwijewitax.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/7Otjhgi/smash_zombies_game.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/2gJ0MTT/22657255527.pdfIn PDF document text
    • https://sepetumeba.weebly.com/uploads/1/3/4/6/134601334/nerebosabusamis.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/jg4gjha/39606037275.pdfIn PDF document text
    • https://bewodopogogubak.weebly.com/uploads/1/3/4/8/134886142/cd2f1e109e586.pdfIn PDF document text
    • http://front-glass.website/28389827851iiu82.pdfIn PDF document text
    • https://pijuvadugodawa.weebly.com/uploads/1/3/4/3/134307721/f9837023e.pdfIn PDF document text
    • http://lonagonem.22web.org/native_american_buffalo_facts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sunuwib.epizy.com/51960968550.pdfIn PDF document text
    • http://tivapatovike.epizy.com/wiwuninurixabufomego.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_off00012490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12490 5428 bytes
SHA-256: ad15f671e307bb398fc6e804b3621bcbdf0588d513762b53ccc11a719f24c03c
font_01_sfnt_off00013701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13701 11676 bytes
SHA-256: c2373d5b5744a9c4fb3c56a3e6ed4dc5a11b05969148c8c632075a459d985544

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