Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b72402811a20f79…

MALICIOUS

PDF

65.7 KB Created: 2021-02-11 13:54:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7657d3b96144c084342343d1df9e07f2 SHA-1: 638e9a8c30990910138dc88f50f781856a036ccb SHA-256: 0b72402811a20f79d1786146c5331809b97e08e5c345f76987a8b1c6d59b6d74
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=the+dinner+party+mona+gardner+plot+diagram In PDF document text
    • https://cdn.sqhk.co/javejako/gh2TRhf/xabosuge.pdfIn PDF document text
    • http://d-youtube.com/seneca_v_manuale3nja.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/gCIqhcJ/ninja_air_fryer_oven.pdfIn PDF document text
    • http://zarabatyivat.ru/lotodegifrjd93.pdfIn PDF document text
    • http://kexipisibufexur.22web.org/muwilixudafupabimif.pdfIn PDF document text
    • http://presentinsta.online/whatsapp_status_images_in_punjabi48epe.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/jowitanatigajagu50tlb.pdfIn PDF document text
    • http://precabinets.xyz/36274711998dv4g9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bezepegu.epizy.com/wireless_security_camera_installation_guide.pdfIn PDF document text
    • http://jidoreno.epizy.com/xegiki.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/8615713934.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/free_handwriting_sheets_year_2.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/cadsofttools_a_dwg.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/13006472063.pdfIn PDF document text
    • http://nitufuluxa.epizy.com/ringtone_new_2018_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_off0000c453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC453 5244 bytes
SHA-256: ff8a487fe50b465a49cc50d73634afa6d2cb1a94a7f871ff2962684c80eef378
font_01_sfnt_off0000d607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD607 10428 bytes
SHA-256: 37ab6d9d45e598fd56291dff2e8b20727fffbf013d42633e3f6da5220fffeb76