Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb53abe18cf912b…

MALICIOUS

PDF

68.2 KB Created: 2021-02-08 15:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8cdae0802523d9795c72dde189da4014 SHA-1: 81c18652354813d068f507f8e2079c88fcd46c4d SHA-256: 3cb53abe18cf912b2ca299ecd4bee7c2ab704e403633192260679770b5ead131
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jacksth.ru/wb?keyword=shutterstock%20premium%20er%20crack PDF link annotation
    • https://rikedinodewo.weebly.com/uploads/1/3/5/3/135323941/gonekipobu-novesurinulaju.pdfIn PDF document text
    • https://dizogesutupini.weebly.com/uploads/1/3/4/6/134631076/9559265.pdfIn PDF document text
    • http://itdomen.fun/injustice_gods_among_us_ps4_unlockable_charactersko7m4.pdfIn PDF document text
    • http://milanbeach.fun/ielts_writing_bar_graph_vocabulary31zq5.pdfIn PDF document text
    • https://dezamemev.weebly.com/uploads/1/3/4/7/134746632/9a63e39f4ee284e.pdfIn PDF document text
    • https://deponoma.weebly.com/uploads/1/3/2/6/132696267/d0491616.pdfIn PDF document text
    • https://ziwagunu.weebly.com/uploads/1/3/4/8/134883986/lanamijabere.pdfIn PDF document text
    • http://savadaqwe.space/ged_science_study_guide7pxyi.pdfIn PDF document text
    • http://1xbets-reg.site/regurcd5qg.pdfIn PDF document text
    • http://labiosdewonda.com/14145532029iuoob.pdfIn PDF document text
    • http://axacheat4.xyz/project_manager_job_salary_torontolt94z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_5fd654c079e9b.pdfIn PDF document text
    • http://am-sound.ru/xasazasixakuzoht6sj.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/842799329297j02h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rilenipavow.rf.gd/kogozamonopufomelima.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_off0000cdc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC4 5308 bytes
SHA-256: e80535b519f402df621561a81f9b789885d28e851e8d4ec591c552e505f66381
font_01_sfnt_off0000dfa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA4 10680 bytes
SHA-256: c59924a4fabf58dbea86f2d0fb261505916f08d5e9a0684da588862ecb4391cd