Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f183f08c038ce0…

MALICIOUS

PDF

64.2 KB Created: 2021-02-19 01:22:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6503173de31f531aad8d75e33be0240a SHA-1: 95bf1b620f6e7e7287591a921885fe67967698ab SHA-256: c9f183f08c038ce0aad4d10a8cfb0280e105c0f77c0a5f237a130c5ff75b530c
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://jottigo.ru/wix?keyword=apk+mod+tools+mlbb+original PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393188/normal_6003c22167dc9.pdfIn PDF document text
    • http://hookup153.space/quiero_ser_como_beckham_descargar_torrentgz7z7.pdfIn PDF document text
    • https://jipotawa.weebly.com/uploads/1/3/6/0/136097183/xekuwejis-resuvoforab.pdfIn PDF document text
    • http://lbaranaydin.com/jafugalun8mzgm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_6024c4f6676b7.pdfIn PDF document text
    • https://kobivepetere.weebly.com/uploads/1/3/1/8/131871499/7219930.pdfIn PDF document text
    • http://pedrons.space/101_methods_of_design6e11f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383160/normal_601ab6aa43713.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_600be7ff76108.pdfIn PDF document text
    • https://livadasim.weebly.com/uploads/1/3/4/3/134312527/xeson.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/firigugixujotov/ls_command_in_linux_with_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/react_native_firebase_background_notification_android.pdfIn PDF document text
    • http://giwofigu.epizy.com/lab_report_on_photosynthesis_and_cellular_respiration.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/radarubupa.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/societe_generale_marocaine_de_banques_annual_report.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_off0000c073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC073 5472 bytes
SHA-256: 8e9dd2a68089a6da34599cf13e974ee2cdb44f4b3471c64c9266793b2c43f1d8
font_01_sfnt_off0000d2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2ED 9656 bytes
SHA-256: 601e963918be5a3fbc6a52f03255f8949f9f192619e9d463dd122c9f4bd12684