Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab8a62e1dc7f6dd…

MALICIOUS

PDF

71.6 KB Created: 2021-02-11 17:06:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: db798e4750367c4c4165a3890dfaaae5 SHA-1: c54c3582844e4255a33d44109fe1ec3ea258f138 SHA-256: fab8a62e1dc7f6dd2604fe90e80629cca3de7858e2aada1c50f0f272d0fe7072
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/wb?keyword=template%20matching%20in%20image%20processing%20ppt PDF link annotation
    • http://drovazvenigorod.ru/gospel_music_praise_and_worship_songs_2019vc3ix.pdfIn PDF document text
    • https://nubavusixid.weebly.com/uploads/1/3/5/3/135348304/753179.pdfIn PDF document text
    • http://instapriz24.site/apparel_design_textiles_and_construction_answersfgxy0.pdfIn PDF document text
    • https://cdn.sqhk.co/vibesadebo/ahf0wMB/lomenuwafidekawaw.pdfIn PDF document text
    • https://tetalopen.weebly.com/uploads/1/3/1/8/131857308/6e5c7b51.pdfIn PDF document text
    • https://tifowufiwadoxi.weebly.com/uploads/1/3/4/0/134098290/gafudamupubojo-gasupimata-wabegovetobumo-gudexaras.pdfIn PDF document text
    • http://wowit.pro/briggs_and_stratton_16hp_vanguard_engine_manuala2bbp.pdfIn PDF document text
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/jewimetisewo.pdfIn PDF document text
    • https://cdn.sqhk.co/baxemazisod/eMZjhge/planetary_devastation_gif.pdfIn PDF document text
    • http://misiliv.66ghz.com/55562573541.pdfIn PDF document text
    • https://cdn.sqhk.co/zaperarori/djdgjjb/40783840015.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/nitatotol/zuzug.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/battlefield_2142_free_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/8299896118.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/nupavopir.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_off0000d836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD836 5296 bytes
SHA-256: be13859aa8273e24eb854dcf314fcb7e20c12034a8cb31ef27ba99b2f0997a69
font_01_sfnt_off0000ea08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA08 11252 bytes
SHA-256: 61c2771e2f5e55d0754f6d155b85520fd6f0ef8bffefc25e1b68d02650c5ebaa