Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ce5227fa19d64f…

MALICIOUS

PDF

66.7 KB Created: 2021-02-24 04:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 79b48e95bf823e0ec4394dcfdf10a1ac SHA-1: e5591bae001e15e2398820ac54be79db6a550fb7 SHA-256: 67ce5227fa19d64f30f67cf375e86b956e7ac8c46266b2dd767637db9cee20e7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=great+gatsby+discussion+questions+chapter+3 PDF link annotation
    • http://mamimufexaliro.66ghz.com/badnam_song_video_pagalworld.pdfIn PDF document text
    • https://roxagidu.weebly.com/uploads/1/3/4/7/134748987/duvetitolome.pdfIn PDF document text
    • http://domastmsk.space/new_york_city_night_day_protests_mondayl5acd.pdfIn PDF document text
    • http://meriline.store/dragon_pet_games_online6yiin.pdfIn PDF document text
    • https://vukojudal.weebly.com/uploads/1/3/5/3/135317211/6545666.pdfIn PDF document text
    • http://usesalle.xyz/is_a_smart_car_expensive_to_maintainxiimg.pdfIn PDF document text
    • https://rawubewo.weebly.com/uploads/1/3/1/4/131405976/zekuwonawim.pdfIn PDF document text
    • https://toraboretopupu.weebly.com/uploads/1/3/4/7/134769369/9772016.pdfIn PDF document text
    • http://stingeksoj.online/46033623024sqr34.pdfIn PDF document text
    • http://itwomen.space/bootstrap_studio_4_freewpoqe.pdfIn PDF document text
    • http://obzorov.site/diferena_entre_radiolucido_e_radioprnd41.pdfIn PDF document text
    • http://smilex.club/xapuxomilutokesafizogadr8pxo.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/tonemakopinibem/talking_tom_bubble_shooter.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/odia_song_2018_video_dj_mp4.pdfIn PDF document text
    • http://zemoxatovasoga.rf.gd/android_tv_box_mini_keyboard_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/34091246015.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/bigeninujusuwukubawakigu.pdfIn PDF document text
    • http://wugupijejituzog.rf.gd/bayesian_methods_for_hackers_probabilistic_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/admission_essay_format.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/25000282044.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/pevixige.pdfIn PDF document text
    • http://nujidurib.rf.gd/agricultural_production_economics_david_l_debertin.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_off0000c634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC634 5868 bytes
SHA-256: 18cb1568a7b2a1c9bd1b952b05dd152b6d70e6f69093cc567038050bb7ec51ce
font_01_sfnt_off0000da24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA24 10360 bytes
SHA-256: 2716a6d07fb253c2fb35bfbf337f8014870b280140e4587232b2b55694c861e9