Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fbb72f2e1b0c524…

MALICIOUS

PDF

81.1 KB Created: 2021-02-26 18:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c2ae70d47ce5908eea4dce05991854cc SHA-1: 9af603fba340892eabdefc858fa201ed96edc39a SHA-256: 2fbb72f2e1b0c524d8c28646ae412b942fd57c237eb7c2a54c9fca3e94729115
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://pelibifir.ru/wb?keyword=hyundai%20sonata%20hybrid%20review%202016 PDF link annotation
    • https://jomaredavox.weebly.com/uploads/1/3/2/3/132302995/bikobab-fasuzudimobum-vinupovelu.pdfIn PDF document text
    • https://xegezegev.weebly.com/uploads/1/3/2/6/132683484/lifimevanawefopifitu.pdfIn PDF document text
    • https://fupakukenig.weebly.com/uploads/1/3/4/2/134234610/nurugowubadojo.pdfIn PDF document text
    • https://rupogasonewu.weebly.com/uploads/1/3/4/6/134653860/mudejibajanuk.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/tufitijinexu/pasegubezoxoxaj.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/viwasagobenulorageki.pdfIn PDF document text
    • http://kirawijivovujej.epizy.com/a_dolls_house_character_analysis_torvald_helmer.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/nadalamotegikodinanatupej.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/surah_al_mulk_by_sheikh_mishary_rashid_alafasy_mp3_download.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/pazugabe.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/60436697645.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/33507448222.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/vidmate_hd_er_3._38.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/21354020137.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/26532324703.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_off0000ff19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF19 5716 bytes
SHA-256: 30dcfad6c6c3f42409071ce7a2bda0156e2d90bad4d525158e1501ed3f9fc6c8
font_01_sfnt_off000112a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A2 10820 bytes
SHA-256: 2afd31e642efd651db74adada0b85315832ad798f3986fb150bcd9daa71f929b