Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ff1cdf662e5612…

MALICIOUS

PDF

70.8 KB Created: 2021-02-05 18:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6778b363646ad09c31654932ac69fbdc SHA-1: 58061ded8f6f4bc4d0707b9cd8f29dfdfc284acb SHA-256: 36ff1cdf662e561254e55b6e79845d016fa933ab78f0d3c6b8f9603917c78bcb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wb?keyword=hindu%20baby%20boy%20names%20in%20sanskrit%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379053/normal_600832dacbade.pdfIn PDF document text
    • https://jipepusubame.weebly.com/uploads/1/3/4/0/134040653/kuxom.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/iMhcCci/gasapazosezojok.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/yibhg4n/34280359873.pdfIn PDF document text
    • https://finiluxib.weebly.com/uploads/1/3/5/3/135350298/baguwoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378404/normal_60043c166941c.pdfIn PDF document text
    • https://patinijogu.weebly.com/uploads/1/3/4/8/134854147/xojimu.pdfIn PDF document text
    • http://zutixononazetu.iblogger.org/beko_integrated_washing_machine_door_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427504/normal_6014483f4bce5.pdfIn PDF document text
    • https://fagadixiridare.weebly.com/uploads/1/3/5/3/135304990/a50316.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379476/normal_60138e1fbe86b.pdfIn PDF document text
    • https://xilasofuvi.weebly.com/uploads/1/3/4/6/134651230/kujorutofusenu-folukijape-gonubuwuxe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://foligebo.rf.gd/15353842850.pdfIn PDF document text
    • http://gidobiladuk.rf.gd/wanaduvake.pdfIn PDF document text
    • http://numivonef.rf.gd/ifpi_music_consumer_insight_report_2017.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_off0000d71c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71C 5424 bytes
SHA-256: a336f24a6fcfe75b7799534d782c7ed4191d77af952bedc90e1c07d40decb4eb
font_01_sfnt_off0000e978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE978 10800 bytes
SHA-256: e45c8639b5f876dc2b509c6b12156836b1839b97fe06fcffe5b4429c00e70662