Malicious PDF — malware analysis report

Static analysis result for SHA-256 df105999d99aee7d…

MALICIOUS

PDF

73.1 KB Created: 2021-02-25 13:33:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a6b2438540418f30cb8e746e6ce64165 SHA-1: 055d54eb4df8a3f6d6b9d5d48c28406b5aadb93c SHA-256: df105999d99aee7da6ca94f0275f3a4ac956300e464866607cdbfb1edad07cc9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/award?keyword=old+yeller+book+plot PDF link annotation
    • http://want-seo.ru/goxizcdspt.pdfIn PDF document text
    • http://white-x.fun/punubuwerelufekusubeu94m6.pdfIn PDF document text
    • https://gitikaru.weebly.com/uploads/1/3/4/9/134901111/9488990.pdfIn PDF document text
    • http://levelupguild.com/595418576767qrge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418746/normal_5fca38d5cc553.pdfIn PDF document text
    • https://vukujaxirebes.weebly.com/uploads/1/3/4/1/134108713/7252867.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479433/normal_601b2ce14095e.pdfIn PDF document text
    • https://venunuwaxel.weebly.com/uploads/1/3/2/7/132740799/kafawenaji.pdfIn PDF document text
    • http://romigeguwapefi.22web.org/76884118080.pdfIn PDF document text
    • http://whalesqpa.fun/lego_minifigure_drawing_template3rw25.pdfIn PDF document text
    • https://jejofiwapo.weebly.com/uploads/1/3/5/3/135312812/neropotimif-worod-jefazilubaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489041/normal_602641fd189ca.pdfIn PDF document text
    • https://zoradelageruwol.weebly.com/uploads/1/3/4/5/134591251/gigubojuxira.pdfIn PDF document text
    • https://luragelekow.weebly.com/uploads/1/3/4/3/134377287/dojif-balofume.pdfIn PDF document text
    • http://fisidunetozusi.iblogger.org/tinder_plus_apk_onhax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tirevotijo.epizy.com/columbian_exchange_activity_packet_answer_key.pdfIn PDF document text
    • http://nesazovopiw.rf.gd/call_of_cthulhu_7th_edition_keeper_rulebook_free_download.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_off0000e3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D7 4896 bytes
SHA-256: 46b576594af2056045b1eeca14d633c21308b1517739e7e3a04acd7246b7a300
font_01_sfnt_off0000f48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48F 10088 bytes
SHA-256: 08d9eef706113fed3341d962781ce614d190bf0b0c1be9874f5463bf159c585c