Malicious PDF — malware analysis report

Static analysis result for SHA-256 c415bf53009e1359…

MALICIOUS

PDF

72.9 KB Created: 2021-02-12 15:16:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 006f13cc63f5bf83effa0e09f3c08930 SHA-1: 74be622beba9530ece83287dde7f732abdbcd026 SHA-256: c415bf53009e13599858c578f77e81c41d82219009418917cbfe524722d1ddec
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=appeal+to+force+examples+in+media PDF link annotation
    • https://xoravali.weebly.com/uploads/1/3/0/7/130775395/fopon-difikuv-kujafa.pdfIn PDF document text
    • http://repochka.site/hoop_new_friends_on_snapchat_apkciqo4.pdfIn PDF document text
    • https://cdn.sqhk.co/mifodirula/HggigDA/67062767364.pdfIn PDF document text
    • https://cdn.sqhk.co/tatiderubota/g4Z69he/x_launcher_pro_version_1._0._0_download.pdfIn PDF document text
    • https://finaxapiw.weebly.com/uploads/1/3/5/3/135301963/lasozij-degejigig-moselesanu-lipem.pdfIn PDF document text
    • https://cdn.sqhk.co/nabaxifow/ixhbiag/paris_tour_guide_app.pdfIn PDF document text
    • https://doleroxewaforud.weebly.com/uploads/1/3/4/3/134322791/vigewujive.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/tajimipojimo/mr_bow_mod_apk_android_1.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/37558900428.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/force_refresh_chrome_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/blank_song_sheets_for_guitar.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/34876146804.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/analysis_toolpak_vba_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/91811750947.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/davv_cet_registration_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/widufabasonedofomimuk.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/jotiwojil.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/75767196619.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_off0000de43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE43 5360 bytes
SHA-256: 665b4ce1cd7a334f6c3099f3eadb36924647a7ad9604c8c983dca7e5a137d559
font_01_sfnt_off0000f06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06B 11240 bytes
SHA-256: ff6736a5617f31ba4a20d9b614f621780ed1531b4de392777730eefe87833373