Malicious PDF — malware analysis report

Static analysis result for SHA-256 37aa906f405ce7ec…

MALICIOUS

PDF

64.2 KB Created: 2021-02-17 10:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a83481782c46f18559f899b86d51a6aa SHA-1: 233ed5199c180e6ffbf350d79468f535d4c1030a SHA-256: 37aa906f405ce7ec5ce1495b4050cff9f366d24efb2d6f11967ec080dfaff1a2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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.
  • 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://yafferge.ru/wix?keyword=double+feluda+full+movie+watch+online In PDF document text
    • https://vigobekopu.weebly.com/uploads/1/3/2/3/132302998/1723841.pdfIn PDF document text
    • https://wowererifawop.weebly.com/uploads/1/3/1/3/131384429/ad7d431.pdfIn PDF document text
    • http://xuwajofona.iblogger.org/93475560802.pdfIn PDF document text
    • http://fepotarugagi.22web.org/39488181814.pdfIn PDF document text
    • https://lalupapetawosi.weebly.com/uploads/1/3/2/8/132816164/jobimonibifuvalap.pdfIn PDF document text
    • http://medtechnika1.ru/kudavazikokumivenunivado9twof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kititone.epizy.com/google_analytics_xamarin_forms.pdfIn PDF document text
    • http://jiboxinazelode.rf.gd/florida_dmv_written_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/ardab_mutiyaran_movie_songs.pdfIn PDF document text
    • http://xijodakofifo.epizy.com/wunoriputurozazoxekova.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/arcore_sdk_for_android_studio.pdfIn PDF document text
    • http://fodimezafizuver.epizy.com/fakaxekubamevizexapaxe.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_off0000bfde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFDE 5280 bytes
SHA-256: 679ae7bc9d875a6ef7d4ac5cd1d937e91b27c7d8fe77a22a1098a0ff10abe1f5
font_01_sfnt_off0000d1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C6 9920 bytes
SHA-256: 5c8f913f4ea7dcde61007dbf4e1c3895c8ab2461f3e9ae42bbad9ee91697c0bc