Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c88d95916e067e1…

MALICIOUS

PDF

67.7 KB Created: 2021-03-09 08:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: df24bcd87f6101b9a72338b70822f101 SHA-1: 1b38ed58f276392b853fdaef62bfbc8532b3ed6e SHA-256: 4c88d95916e067e1560eac7fba81f5642cdc2f042c4391e25f0113341b43e3d0
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/wix?keyword=sd+gundam+g+generation+f+iso PDF link annotation
    • http://ridovise.sportsontheweb.net/85540339722.pdfIn PDF document text
    • https://wuxudaboxebe.weebly.com/uploads/1/3/5/2/135297242/vovojusozox.pdfIn PDF document text
    • https://cdn.sqhk.co/zamodozitip/VgcC8Tq/62775452267.pdfIn PDF document text
    • https://kututububon.weebly.com/uploads/1/3/1/6/131637035/7817fb426fa2d.pdfIn PDF document text
    • https://cdn.sqhk.co/tefupudoma/haBVjc8/45192034801.pdfIn PDF document text
    • http://fegiroxopirez.sportsontheweb.net/lifetime_basketball_rim_installation.pdfIn PDF document text
    • https://rexakutomas.weebly.com/uploads/1/3/0/7/130739652/7af2b.pdfIn PDF document text
    • https://dinabowufijub.weebly.com/uploads/1/3/4/7/134751612/magadepepo_xekupuluxixawap.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/fibgc7D/smart_switch_data_mobile_content_transfer_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bisidilit/hekidgd/53597534229.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/fitinawe.pdfIn PDF document text
    • https://cdn.sqhk.co/liregagibago/iJjeMjc/ace_academy_skies_of_fury_download.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/renerubikerafijebul.pdfIn PDF document text
    • https://cdn.sqhk.co/mofisozulud/thjcFhj/marble_temple_quest_apkpure.pdfIn PDF document text
    • https://baxegirugono.weebly.com/uploads/1/3/5/3/135319521/tubuw_rapopefopu.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/speed_queen_washer_parts_diagram.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3906a7b6-f0ea-4a5f-9f7a-bbbf9ca20129/zokonixowironupezozivikes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f16fd5-d144-453e-8208-c5c3da6ccb2a/call_of_duty_update_time_est.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_off0000ccca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCA 5296 bytes
SHA-256: d5a66820e11686e3fae1d98d81d136b2be73e2e6f455bcbbad85cbdb22c4c291
font_01_sfnt_off0000deba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBA 10200 bytes
SHA-256: 2b0f4fa24f5121ad839c4d5377a36ca390423a73e37b9791fb4f398d249bc1b0