Malicious PDF — malware analysis report

Static analysis result for SHA-256 d41506b93a4cdbe3…

MALICIOUS

PDF

72.5 KB Created: 2021-02-14 00:45:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1151d9a99fc22c34ecbac55180e0ae39 SHA-1: f5fa537f5181320beec70887a054713b162b5425 SHA-256: d41506b93a4cdbe3d48a694e1f4ea27ee27f23e17ddbe868c2310e0887d56149
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://druttle.ru/wix?keyword=storytown+grade+2+grammar+practice+book PDF link annotation
    • http://espaceabone.com/consumers_report_washers_and_dryerskpru1.pdfIn PDF document text
    • https://cdn.sqhk.co/buwowunuras/ioQhaie/scythe_digital_edition_multiplayer.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/c2HcIJQ/splashtop_business_support.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453329/normal_5fdaadfa834a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_602855b017443.pdfIn PDF document text
    • https://cdn.sqhk.co/sexobivobufo/Wjhiagc/glitch_video_effect_pro_apk_download.pdfIn PDF document text
    • http://extraterrestrials.space/pidanosikakemila0oer4.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/lazolu/3270561815.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/systematic_review.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/vorirodamefejimuz.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/luzexakalesurutemowovado.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/biblesoft_pc_study_bible_4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/birthday_card_printable_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/bhojpuri_video_dj_ka_gana.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/android_back_button_pressed_event.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_off0000dc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5F 5816 bytes
SHA-256: f17b307eb84d76b58181f5a44141bd95173e34ae3ef3adf936bbcdae2e1f4462
font_01_sfnt_off0000f02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02E 10836 bytes
SHA-256: 256f30eccdaba58ef12c5e0bc8b602677ee4dfd42688c9c4935b384fcd5f36ae