Malicious PDF — malware analysis report

Static analysis result for SHA-256 a028b4788c6401be…

MALICIOUS

PDF

69.1 KB Created: 2021-02-18 03:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 36105cf5d568832f7344230456cc40ae SHA-1: f4116f999fb6c2dabe6368fd15399798c1fc19cb SHA-256: a028b4788c6401bedd38c7ac38f80263ee35641b5e8ca9d9eec3e4026e7b4dd5
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=find+me+laurelin+paige+free+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495525/normal_5fe23b485cd1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529977/normal_5fdf0e5d53b0f.pdfIn PDF document text
    • http://requiredjokblog.com/filtre_analogiqueb9ne0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417023/normal_600a19805a0f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458849/normal_5fde81261cc8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_6012bc9dc7d23.pdfIn PDF document text
    • http://goodshopsales.xyz/38921761424fflbl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474446/normal_5fee6c3735c68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411512/normal_5ffddf7863098.pdfIn PDF document text
    • http://finansi-7.online/360_performance_appraisal_definitionpakjy.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/bevarolimesale/widoxozafagadad.pdfIn PDF document text
    • http://bukufam.epizy.com/firefox_42_to_49_free.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/79334405501.pdfIn PDF document text
    • http://munoxefarofow.rf.gd/fisegakidulizifufifejutel.pdfIn PDF document text
    • http://bufizufidubak.rf.gd/al_anon_literature.pdfIn PDF document text
    • http://jukopiwiguf.rf.gd/nios_10_marksheet_2019.pdfIn PDF document text
    • http://gusadixesexa.epizy.com/vocalise_rachmaninoff_saxophone.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_off0000d28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28E 5140 bytes
SHA-256: 551894cc57206f146a63e4ed72e1640ef0a0b5910fc43ddd10d708c25109ba64
font_01_sfnt_off0000e3f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F7 10304 bytes
SHA-256: 9216b8a89b5d610de22b0306e4e5da9341c4c1d96b6a9449bda6e61d9ec66388