Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c56f6d3addc28dc…

MALICIOUS

PDF

72.1 KB Created: 2021-03-01 02:05:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 473957969402b482fa908345ddc084b7 SHA-1: 17b53e375fb24076dfd4d327b9c35c7368f66bb7 SHA-256: 5c56f6d3addc28dcb9949eeb43f01d14152025a55b950fce472b3eb058ab6ba4
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://jumiwimov.ru/award?keyword=words+to+describe+a+forest+ks1 PDF link annotation
    • https://bojojibapofaz.weebly.com/uploads/1/3/4/4/134478515/c8570cf61ecda.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/lewapexuv.pdfIn PDF document text
    • https://kuweperiti.weebly.com/uploads/1/3/4/9/134904821/cda9e9e07.pdfIn PDF document text
    • http://ipai.online/what_is_the_smallest_animal_in_the_world_by_length0qwxr.pdfIn PDF document text
    • http://povulofi.mywebcommunity.org/how_to_install_bontrager_ridetime_cycling_computer.pdfIn PDF document text
    • https://razixolinatu.weebly.com/uploads/1/3/4/3/134384461/308e0eb.pdfIn PDF document text
    • http://rebezun.mygamesonline.org/zejipalumidab.pdfIn PDF document text
    • http://film123watch.com/nojatowiduzoperivivoweke99ucp.pdfIn PDF document text
    • https://lolozodosut.weebly.com/uploads/1/3/1/6/131606575/5976742.pdfIn PDF document text
    • http://keto-menu.online/205746441062fie7.pdfIn PDF document text
    • http://tertov.xyz/matemticas_financieras_1_jess_rodrguez_franco_gratisyakvu.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/jeromopelurab/98980154946.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/motorola_apx_7000_bluetooth_earpiece.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/hangout_app_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/uniformly_accelerated_motion_physics.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/essentials_of_business_communication_9th_edition_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/antara_mitra_ding_dang.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/barood_assamese_movie.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_off0000e0bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BB 5252 bytes
SHA-256: 63308540e1309095165cf42a105375e49a1d811b6317eec0ef31fcb63c0a319c
font_01_sfnt_off0000f2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C1 9844 bytes
SHA-256: bb07ab484da6e7673c9d5226894414365e22a190470c5f525e4bbf964d8f42f6

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