Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f6899b2710eb5b…

MALICIOUS

PDF

67.8 KB Created: 2021-02-23 03:16:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 656b52c6dd2aab431b7c912a8e16a6b7 SHA-1: 8c05645821676cda46db8512494b1e460f1ed5b7 SHA-256: f7f6899b2710eb5b8efef0ac9ec7ff6031dc8b77b8e02f19b4c97a4260fbeaa2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jacksth.ru/wix?keyword=bushnell+scopes+manual PDF link annotation
    • http://future-techno.ru/vegidujizozuzetoresov2425l.pdfIn PDF document text
    • http://begetus11ppz.xyz/arduino_uno_reference_manualixdym.pdfIn PDF document text
    • http://hangookoil.ru/liximinidififabezelko0tp.pdfIn PDF document text
    • https://buxijabis.weebly.com/uploads/1/3/5/3/135329720/57fbb4.pdfIn PDF document text
    • https://palezagedubegiw.weebly.com/uploads/1/3/4/0/134017965/784ee562940bc.pdfIn PDF document text
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/3997531.pdfIn PDF document text
    • http://fruits-summer.fun/voodoo_doll_live_wallpaper_iphone_xx94kh.pdfIn PDF document text
    • https://luxoxika.weebly.com/uploads/1/3/4/8/134899107/2003135.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/english_literature_a_level_revision_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/characteristics_of_historical_research.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/business_letterhead_word_template.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/mkv_bollywood_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/apple_logo_font.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/99714809717.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/47140017054.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/delhi_bus_route_map.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/rizipejomeparolatulisop.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/pt_abm_investama_tbk_annual_report.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_off0000c2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AD 4880 bytes
SHA-256: 598b46e955810130b19c20f402a30bfa79fd595f184f9b93349f5c1b4748d495
font_01_sfnt_off0000d303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD303 9780 bytes
SHA-256: 4c1c11985df4ce105bf1e59d7bb5ab9911e74edd5c0b779143436e886bff44b5
font_02_sfnt_off0000f460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF460 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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