Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae7ee81b70fccea…

MALICIOUS

PDF

66.4 KB Created: 2021-02-21 14:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e916d13bbb9da6292f767079d7b4cb16 SHA-1: 4118ea41e56ea6c3c7eb8e487547c6848676d896 SHA-256: 4ae7ee81b70fccea8f582d898422773c43ced6b40b4a0fc5f3897098b133ae71
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://jottigo.ru/wix?keyword=coven+witches+witchery PDF link annotation
    • https://liwuvena.weebly.com/uploads/1/3/1/3/131398027/wijosupolopifoz_gewubajive_dowamisodazaz.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/jivala/91885352427.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/9247853065.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/76158283577.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/rolizuxaxuwebu.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/22451607946.pdfIn PDF document text
    • http://jodamedorofile.epizy.com/nix_digital_photo_frame_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/penn_disorientation_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/hit_ball_game_app.pdfIn PDF document text
    • http://gerubetez.rf.gd/jalipinanovewurasilux.pdfIn PDF document text
    • http://gegukisakewomo.rf.gd/exponent_rules_worksheet_math_aids.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/the_evil_within_all_collectibles_guide.pdfIn PDF document text
    • http://kalilom.epizy.com/4145946747.pdfIn PDF document text
    • http://pavebutom.epizy.com/planeacin_estratgica_personal_uveg_tarea.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/82630660589.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_off0000c761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC761 4804 bytes
SHA-256: a789128686c39371e0e23d299b2c725a7aebcb94d88327b1b05a8e1a0ed59a02
font_01_sfnt_off0000d7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C9 10856 bytes
SHA-256: f11de0ed6870e06174690e5785486442e80146ccd1f47fdff8bc70923520db2a