Malicious PDF — malware analysis report

Static analysis result for SHA-256 b302303915e36232…

MALICIOUS

PDF

67.6 KB Created: 2021-02-16 03:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5327009781b45f1c6a2b5c0b0d34b964 SHA-1: fa6345cc9556083a09dd3ae0fc7cb832ffc5676f SHA-256: b302303915e3623288ee34f61d2edd6bdc8b8e219db6888a8a93503bdfc544c9
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wb?keyword=what%20causes%20a%20backfire%20through%20the%20carburetor PDF link annotation
    • https://cdn.sqhk.co/zarepowake/cjhchb3/dofilapis.pdfIn PDF document text
    • https://cdn.sqhk.co/bubiwalifeda/gVXJODf/call_of_duty_mobile_garena_pc_emulator.pdfIn PDF document text
    • https://cdn.sqhk.co/fesakesovoka/aidA6ge/28516549323.pdfIn PDF document text
    • http://gutprod.xyz/bibanongxjim.pdfIn PDF document text
    • http://kvrovk.xyz/photo_camera_apps_for_androidarh58.pdfIn PDF document text
    • http://shopsupergood.site/borderless_world_ohmae4a3nl.pdfIn PDF document text
    • http://carluxepaint.site/apa_format_citation_book_page_numberxpbck.pdfIn PDF document text
    • https://cdn.sqhk.co/kerosumumato/ghbgjhd/76270034829.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/xamapebonijos/light_reflection_and_refraction.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/44593270515.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/bapuv.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/fisovowafesikelafaguresi.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/tipos_de_brocas_de_perforacion.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/weekend_hollywood_box_office_report.pdfIn PDF document text
    • http://pujukejesoteja.epizy.com/hackettstown_school_district_salary_guide.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_off0000cb9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9F 5328 bytes
SHA-256: cb12a56ddac994b9aff3e3669643c19d18711cc3515399111639483555c200f7
font_01_sfnt_off0000ddcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCC 10420 bytes
SHA-256: 8fcea8fe52e89335b7a470405336aceddad631b20b3eae031f2a1bce4cade360