Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c264e8758da50e…

MALICIOUS

PDF

68.6 KB Created: 2021-03-01 19:05:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f431e849cbda618aaf2628762d401441 SHA-1: 2e8bb86df8933839ff0b5e4c197d5c6fabc9f25b SHA-256: 66c264e8758da50e0f8abfef6a2a349e7885ccef736f324c5d76bbdcf76fd424
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://mezovuduw.ru/wix?keyword=blue+nose+friends+sloth PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469847/normal_60372fbbe7700.pdfIn PDF document text
    • http://gavepokuni.22web.org/vector_canape_demo.pdfIn PDF document text
    • https://cdn.sqhk.co/dufadafakuti/jfp59Wt/loxitipisujug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384459/normal_6008002c501e4.pdfIn PDF document text
    • https://cdn.sqhk.co/bogonelemid/epp6Kqx/tomiwexeriripejetutez.pdfIn PDF document text
    • http://zidujuwus.iblogger.org/street_fighter_4_apk_obb.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/bachelard_epistemology.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/ropidadegaxut/metal_gear_rising_revengeance_android_size.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/bamuvego.pdfIn PDF document text
    • http://kebanibaru.epizy.com/haematopoiesis_process.pdfIn PDF document text
    • http://ziposovamuvega.rf.gd/bagapevamunibi.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/59989620946.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/bareboat_sailing_croatia_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/batman_games_free_pc_full_version.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC430 4836 bytes
SHA-256: 02cefa90f101063604a824ec95b632d7e07b6b2ac0598b84645cbc76f9cf502e
font_01_sfnt_off0000d492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD492 4284 bytes
SHA-256: 681444574658f47e8a088e51be8472bb5147d323249e3d9acb2d57ea34902ffd
font_02_sfnt_off0000e019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE019 10832 bytes
SHA-256: 119340470c302918983e37abbe382500a98c6a505acd854159c42c6f46e94947

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