Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bcc7cbfb8acef16…

MALICIOUS

PDF

77.4 KB Created: 2021-02-13 06:08:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a0d6a1fcc6886af3e82fd5e0b8e9f39b SHA-1: 4f19637a954c27645121a76c2943bf552a7984a7 SHA-256: 7bcc7cbfb8acef1646310b51ce0a370f8735d935c223cc8f3514293d28f13037
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://baarspo.ru/wb?keyword=telephone%20etiquette%20pdf PDF link annotation
    • https://cdn.sqhk.co/dutararopat/ichjgfT/71256961168.pdfIn PDF document text
    • https://cdn.sqhk.co/wimedizi/eK3B2hg/captions_for_instagram_and_facebook_photos_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/jgdid4z/idle_champions_of_the_forgotten_realms_ps4_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/dLvMEia/zombie_gunship_survival_best_weapons.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/bTgcieu/icymi_meaning_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/vigibizez/iiheG8q/solatiteso.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/gdsigql/atmos_energy_bill_too_high.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://natikopudidupex.epizy.com/google_material_icons_cheatsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/pending_play_store_xiaomi.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/verona_ontario_weather_report.pdfIn PDF document text
    • http://ziwilud.epizy.com/vocabulary_words_with_meaning_in_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/faxukoxodalalinuwajuluza.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/75164686464.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/air_brake_system_ppt_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/24859019392.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_off0000f5f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F4 4720 bytes
SHA-256: 9499623988ca3fd4596d3d33ada38aefa6e613250bb8c7e40bbbd4bc933dd8e5
font_01_sfnt_off000105fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FE 10216 bytes
SHA-256: df8d9c98db76f55f8eaae5675002124e9ea81e6026b7f0d02b9161d4393376f7