Malicious PDF — malware analysis report

Static analysis result for SHA-256 847e4fbfc7d7efba…

MALICIOUS

PDF

74.0 KB Created: 2021-02-05 15:58:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7b86137c54baf34125e7d468b305196e SHA-1: 1d8a1b0b032e66e63ff20bdda225235c50ad595b SHA-256: 847e4fbfc7d7efbad2b91e024162ee9d1f715cd6d501d78cbe82f07c0b828be2
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://jacksth.ru/123?utm_term=real+meat+dog+food+chicken PDF link annotation
    • https://cdn.sqhk.co/sesexibanobu/Zjiidje/fovipezoxibefefuzekixo.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/hifjfgf/66130474926.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/ehgmihc/49936546516.pdfIn PDF document text
    • https://boduburul.weebly.com/uploads/1/3/4/6/134654649/figotowuv-tawuwanapozena-zizuvezudam-diminaligo.pdfIn PDF document text
    • http://kukushka.space/julevenizuwebapuxoganesn717.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/OifVje3/classic_chocolate_chess_pie.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/gechhjb/star_wars_kotor_apk_download.pdfIn PDF document text
    • https://sipovabamekejo.weebly.com/uploads/1/3/5/3/135391609/508cf087.pdfIn PDF document text
    • https://latiratigu.weebly.com/uploads/1/3/1/1/131164156/vukipi-morejazufoxiz-xowadadep.pdfIn PDF document text
    • https://cdn.sqhk.co/legikowe/gf0Kjhe/meteor_showers_2020_texas.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/pulujolatepuv/levipavixorerifuzinate.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/zezemenidezurorasanexinu.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/reporter_job_vacancy_in_ethiopia_today.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/42982347282.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/aretha_franklin_jimmy_lee_song.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_off0000e4a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A3 5232 bytes
SHA-256: ce188ffad01e6af2755170671d134ee70b2bf3d284d6707afb9ba2918a32d7ff
font_01_sfnt_off0000f659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF659 10808 bytes
SHA-256: 51f08f07a7c626ba4ee5b2d9ef451091a1cad62994aa4f797a9a878146eb15d3