Malicious PDF — malware analysis report

Static analysis result for SHA-256 636244dd00c2b7f8…

MALICIOUS

PDF

70.3 KB Created: 2021-02-16 02:38:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d8b770f88696346843266c859133d7dc SHA-1: 60229d9b1a8bf30aa5e0a6e8cd273176508cccc8 SHA-256: 636244dd00c2b7f891d2a8810db601b3e5f3284802851b7e42735cfb605f4683
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=7+sigma+arms PDF link annotation
    • http://hotel-engels.ru/zilubaxigafukemelivivamofnzm5.pdfIn PDF document text
    • http://net-klientov.ru/nagdev_bhojpuri_movie_mkvtrac6.pdfIn PDF document text
    • http://cooldomen.space/spin_the_bottle_party_game_ideasuq0ml.pdfIn PDF document text
    • https://cdn.sqhk.co/kasunelebak/RgfQ5ja/frndly_tv_firestick.pdfIn PDF document text
    • http://nigasheff.xyz/70751459189f0x7e.pdfIn PDF document text
    • http://confirmationhelpcenter.com/garawad2l38t.pdfIn PDF document text
    • https://cdn.sqhk.co/duwefetufe/duJZhg2/traffic_racer_2020_para_hilesi_indir_gezginler.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408584/normal_5ff514b22bf00.pdfIn PDF document text
    • http://gatorama.space/384305426618nhbk.pdfIn PDF document text
    • http://yellownatural.space/whitney_simmons_workout_planw2u15.pdfIn PDF document text
    • http://bestsaleshopin.xyz/sufepumesoneqmp7j.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/nibhejt/dudufudowibe.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/luramamelolem/wisaxesatoredirenozevagi.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/52418848672.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/bhaktha_prahlada_songs_naa.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/weather_report_today_in_my_location_tomorrow.pdfIn PDF document text
    • http://sonasekofuxix.rf.gd/rebebiziratezobazikonile.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_off0000d1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F5 4956 bytes
SHA-256: 941e8bd65addc59699ae51a523470d9c889f91849ec8b191938065b5480c88fe
font_01_sfnt_off0000e2bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BC 13016 bytes
SHA-256: e0527f35729b65816f91db52a1a612cf25a9c2dde982a395fd6f839a3356ac6f