Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdbd39d46c6f203…

MALICIOUS

PDF

73.1 KB Created: 2020-12-26 18:16:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: c3e2e939ebcc02cec4ef4cc04607ab32 SHA-1: 9df9cdcb25ae965977ef818fa2f852225514a9cc SHA-256: 8cdbd39d46c6f20341582ea724322b922a975c4ee87eb04753c05bc3c245d3d7
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/wb?keyword=anthills%20of%20the%20savannah%20chapter%201%20summary In PDF document text
    • https://pulepuvoko.weebly.com/uploads/1/3/4/2/134266128/koremivene_popimenoxa_tepilam.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/mogipegi/extent_reports_maven_repository.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/david_pawson_unlocking_the_bible_online.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/gaxolidikusokoxaz.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/rarudasunofisitelukis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccf84caa-1b10-4da0-a037-07ba3d263c0f/72505683886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e275c0bc-d678-492c-9f38-36cf1931cd48/dbpower_dvd_remote_control_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/betimugi/73343269233.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/detukemogetokarax.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/xataxuvadulimimefa.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/platform_revolution_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/6584034329.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/form_for_us_citizen_born_abroad.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/bissell_cleanview_model_9595a_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/moxuxepunebili.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_off0000e395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE395 5460 bytes
SHA-256: 2582207fcbf8f3c3e46bc270711e54c50dcc33f7f900e43d80dda9506f22a5bc
font_01_sfnt_off0000f613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF613 9912 bytes
SHA-256: e1244313321e45eeac6e24ea87bd4e8b26d5787f00f41f0580aad30037596d52

Open this report in the interactive analyzer, or submit your own file for analysis.