Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3340c8efbaa6d42…

MALICIOUS

PDF

69.3 KB Created: 2021-02-10 00:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 822dd7e955ba4bcd71477e56e0ec344d SHA-1: 176a6f8e2028afc6bdd8cee5cf25213eff0b1f76 SHA-256: f3340c8efbaa6d428930daeeee8fe16461936f43aac6fd58752f84a9bac5525c
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://leonvi.ru/aws?utm_term=characteristics+of+risk+management+in+information+security PDF link annotation
    • http://excschool.ru/48351354345llqk7.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/Tqi4Ohc/fun_facts_about_yourself.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikewe/jdo4did/63192994315.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwopaperuv/bkigvib/kijoxamabadol.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/ighcLp1/digital_speedometer_gps_offline_odometer_hud_problem.pdfIn PDF document text
    • http://busivel.xyz/lagowukevuvelun0gg7.pdfIn PDF document text
    • http://trokot-new.online/waive_notice_period_resignation_letterkizj9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421333/normal_601a455487cdc.pdfIn PDF document text
    • https://cdn.sqhk.co/zotiperugi/Ogf3ghX/puvuzelamevemitufomigafin.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/lhgEjjG/southern_fried_chicken_goujons_tesco.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5fd161197f891.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497372/normal_60125016f1c64.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/dgfBbjj/picsart_photo_editor_pic_collage_maker_filters_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/hy9UChi/equalizer_apo_microphone_noise.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/vigevot/babul_bangla_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/eurosport_2_tv_guide_europe.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/icloud_for_windows_photos_to_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/51287028181.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_off0000d44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44D 5332 bytes
SHA-256: fbb51b3d8c66754d3f4aa9358273c5da04713a886596595f2f8d8dd113b3c8c9
font_01_sfnt_off0000e64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64E 9760 bytes
SHA-256: cec1595aea7fae30265d69ced3b6790d10dd81efc5f8b9ced669ca105f375eb4