Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b9969ed9410491b…

MALICIOUS

PDF

73.3 KB Created: 2021-02-10 12:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1e6c81e4638bda68cb05c05a4bfb8114 SHA-1: 7d5d60291296711ba18df73055f2409d2eea7e5c SHA-256: 6b9969ed9410491b39ccae11abd5b8a8fdb1030f7681138bcc0e593ee33bd471
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://baarspo.ru/wb?keyword=google%20chrome%20apk%20uptodown%20android PDF link annotation
    • https://daxexamuve.weebly.com/uploads/1/3/4/4/134446800/tonuluvagej_dapipuzevudage_pijexe.pdfIn PDF document text
    • https://cdn.sqhk.co/manaruparil/qMjhdgd/bivikenasakinu.pdfIn PDF document text
    • https://zokelafeg.weebly.com/uploads/1/3/4/8/134889419/pulujigebiwepuf.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/iUv29gg/tiles_for_bathroom_walls_images.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/174a97ec1.pdfIn PDF document text
    • https://cdn.sqhk.co/vumulevezuf/RMiagjq/download_game_zombie_city_defense_mod_apk.pdfIn PDF document text
    • https://mejibafizafev.weebly.com/uploads/1/3/4/0/134042836/wibiniximususu.pdfIn PDF document text
    • https://cdn.sqhk.co/radageroboko/hg3Rhbx/75816818581.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/putelekireza/bitterne_park_sixth_form_ofsted.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/zazir.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/lizizugamagenebelebef.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/6999924676.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/liwonediwoseke.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/blackstar_id_core_100_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/amida_brimah_scouting_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/bailamos_enrique_iglesias_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/athabasca_university_transfer_credit_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/vigubipo.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_off0000e038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE038 5496 bytes
SHA-256: b4bd8f50e7d23e3f54a37ee0e8f0e9a07c99205a37e704112de762323cc37cb8
font_01_sfnt_off0000f2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D4 10816 bytes
SHA-256: 425a12732751f4e7999c883567d3c3f49986451c3a4ab74783e2fd461454d8b2