Malicious PDF — malware analysis report

Static analysis result for SHA-256 b467a11a2fad3c86…

MALICIOUS

PDF

67.6 KB Created: 2021-03-02 09:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 564354697fe696e1af6939a3c1b98c99 SHA-1: 3da76cfdd062042bab7175cba73414b68bbde0e6 SHA-256: b467a11a2fad3c86cf0a5b63893a97149ba3981efae7fb7522f1d02e77066e00
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/wix?keyword=wolverine+f2d+mighty+video+manual PDF link annotation
    • http://mexicotop3.xyz/34048801169lvqoa.pdfIn PDF document text
    • https://cdn.sqhk.co/vejuwami/PjeFgHC/rdr2_companion_app_won_t_pair.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497650/normal_5fef15498f174.pdfIn PDF document text
    • https://mevukufidax.weebly.com/uploads/1/3/1/3/131379039/7817129.pdfIn PDF document text
    • https://cdn.sqhk.co/jawefujivi/ii3iaBp/73562593167.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/Ajigewb/9892326019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465252/normal_6015d4f6ba058.pdfIn PDF document text
    • http://optamorem.com/62872136167d3if9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481052/normal_5ffe11524b8ba.pdfIn PDF document text
    • http://netopodimamo.mywebcommunity.org/the_norton_introduction_to_literature_shorter_12th_edition_2017.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/vitelitubovuluj/fanepesanitokemalaguxegok.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/39391888048.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/cinema_xxi_film_danur.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/how_to_read_better_and_faster_by_norman_lewis.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/55226868509.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_off0000cd08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD08 5448 bytes
SHA-256: 1a6bc2b1d36fe6cf9c6c77733b571963cbbcaaaf78f4e35e099094ffab55a652
font_01_sfnt_off0000df7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7C 10044 bytes
SHA-256: 7d538aa1927c88eaab83252fafff08ba062ee2bc51ee7246672f1aa3347ea6c2