Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 f3aeecf4f7f8a57a…

MALICIOUS

PDF / .VIR

369.9 KB Created: 2023-11-13 02:26:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-10-23
MD5: 28edd530e3239074282d8798e8e48ade SHA-1: 929d40a3d8c7088fd2f6bb229a22054241d923b0 SHA-256: f3aeecf4f7f8a57a602ad81ab503f0215bdac6485d2aa76bc210a6928919780e
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://fire-hd8-operating-manual.akgrafik.com/44277440621.pdf In PDF document text
    • https://fronius-magicwave-2200-operating-manual.moviespond.com/zusogugejibuxutesuwe.pdfIn PDF document text
    • https://books-about-culture-for-thrid-grade.w3d-j.com/22589397114.pdfIn PDF document text
    • https://book-series-about-dragon-riders.era-insurance.com/76406562020.pdfIn PDF document text
    • https://guide-bas-de-porte.mlgnbit.com/93840374326.pdfIn PDF document text
    • https://motherless-brooklyn-book-summary.21dayang.com/52983304685.pdfIn PDF document text
    • https://legend-of-korra-books.chanceforchanges.com/nizobuwarexibubomu.pdfIn PDF document text
    • https://the-house-by-the-sea-book-review.pokanapants.com/pidalur.pdfIn PDF document text
    • https://daddy-s-wicked-parties-book-summary.davidsaffir.com/29443313164.pdfIn PDF document text
    • https://guide-de-taille-gants-nalini.twilighttealounge.com/13001576393.pdfIn PDF document text
    • https://nimerunisigi.xenina.co.za/90546455860720202223064165?faximotejuwowaxogepajufupasixijopogamofopezepebuk=xutufepovorolorowigidaxonagokakameximejudafivunuvagivufimolixalovamakozozokiwovivulajuzimiwopaxadowavemeladelerirofitukigesoxelarenukakojewunedazijomididedeninujevukofixodusapajazalimirosapefolajexeduxivef&utm_term=pin%C3%A7as+cirurgicas+nomes&xuvasuluxonobesagigamogetekaxubufidolemogizovufur=gozavilelebufememodigolimebinujaturidegosebenejipilokixowinobabumibidudepogutawolumujukulisuwavagijimekoratutipodemebupibafepavaropejokavikuIn PDF document text
    • https://nimerunisigi.xenina.co.za/90546455860720202223064165?faximotejuwowaxogepajufupasixijopogamofopezepebuk=xutufepovorolorowigidaxonagokakameximejudafivunuvagivufimolixalovamakozozokiwovivulajuzimiwopaxadowavemeladelerirofitukigesoxelarenukakojewunedazijomididedeninujevukofixodusapajazalimirosapPDF link annotation
    • https://nimerunisigi.xenina.co.za/90546455860720202223064165?faximotejuwowaxogepajufupasixijopogamofopezepebuk=xutufepovorolorowigidaxonagokakameximejudafivunuvagivufimolixalovamakozozokiwovivulajuzimiwopaxadowavemeladelerirofitukigesoxelarenukakojewunedazijomididedeninujevukofixodusapajazalimirosapefolajexeduxivef&utm_term=pin%C3%A7as+cirurgicas+nomes&xuvasuluxonobesagigamogetekaxubufidolemogizovufur=gozavilelebufememodigolimebinujaturidegosebenejipilokixowinobabumibidudepogutawolumujukulisuwavPDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000570e2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000570e2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000570e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x570E2 10728 bytes
SHA-256: 5211e12665050b2b4985f6c8871e499c36d576e4458243ced46bf4cbc3566c8f
font_01_sfnt_off00058934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58934 19328 bytes
SHA-256: a68e94f6e83ece12b92ad0a59ed9c3aa0ebc88f15a218fd9bc0e24a2f43f8c20