Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe0c3397172aeeb…

MALICIOUS

PDF

66.6 KB Created: 2021-02-12 18:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 510407251a0c2414b0d65811fb758094 SHA-1: fd819aa275a182d774e7de69e5d3eb8c94f452c9 SHA-256: dfe0c3397172aeeb4da54a84907590466d5d85801f04bf3ea0f1b58e6f857981
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://seumenha.ru/wb?keyword=bunty%20aur%20babli%20movie%20%20hd PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424951/normal_5fe40fc2508e2.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/RlhggUj/ravensburger_foldaway_puzzle_board.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393754/normal_6013298368ff1.pdfIn PDF document text
    • https://vemesefopega.weebly.com/uploads/1/3/4/6/134684253/2471402.pdfIn PDF document text
    • https://sugasukeni.weebly.com/uploads/1/3/4/8/134878852/nuripudofa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5fd8c09165e41.pdfIn PDF document text
    • https://dozumudokasalog.weebly.com/uploads/1/3/4/9/134902229/c4a5bd62794d6.pdfIn PDF document text
    • https://tudegikugil.weebly.com/uploads/1/3/5/3/135317618/009d335cb88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413363/normal_5ff22718aaaa6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kavobomuvaweg.epizy.com/62652730418.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/68854813014.pdfIn PDF document text
    • http://kidogip.epizy.com/23667714984.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/22634878080.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/17591543268.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/bls_ebook.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_off0000c9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B4 5236 bytes
SHA-256: 4d4f339832e47fb3e631c323301586d3e3dc6b7f8fc5c350a6a2dee5b57ac2cf
font_01_sfnt_off0000db62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB62 10288 bytes
SHA-256: b183e04a28ae88fb1431ef00047eacaf10e7ee061c1d82eed51523c451a867ab