Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b5173bfdaf5436…

MALICIOUS

PDF

67.9 KB Created: 2021-02-27 15:31:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 286d062f66edd86a44c769d68a5164ec SHA-1: fb5d9934e752689a242151d291820dd758c55c52 SHA-256: b1b5173bfdaf5436d520d9a5dfa1dadcd73bacb52ccc1eb67711fa75ae271cfd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=vw+jetta+parts+manual PDF link annotation
    • http://nejevefivi.mypressonline.com/what_are_the_purposes_of_social_work.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473919/normal_5ffdbf6699eb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470014/normal_60048a1d1c1f6.pdfIn PDF document text
    • http://wamimexololiwam.iblogger.org/the_developing_person_through_the_lifespan_11th_edition_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jisokewiw.epizy.com/60410666763.pdfIn PDF document text
    • http://zamutodud.rf.gd/usps_account_number_format.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/amazon_kindle_apk_mirror.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/46796257143.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/widebevitebuvutunalivol.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/aap_guidelines_hyperbilirubinemia_2009.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/vlc_media_player_linux.pdfIn PDF document text
    • http://pajogapusifured.rf.gd/xiraka.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/bible_quiz_questions_and_answers_luke.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/80836721486.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_off0000cf0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0B 5100 bytes
SHA-256: 56618d3234d4ed3a96479979ce16e316b51618857ac0d9b16bfd1980a94e4ed9
font_01_sfnt_off0000e061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE061 10076 bytes
SHA-256: 39eea3a9af72581c6d0d226e797ca36bf14d71630821e8a7af8a65666e6fca1f