Malicious PDF — malware analysis report

Static analysis result for SHA-256 6261e71e69eda0e8…

MALICIOUS

PDF

71.9 KB Created: 2021-03-02 19:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0c3d5d3b7b58b7ea0838c792a5659635 SHA-1: 8b901ccc214f459f88da4996aeb961aa466cfaea SHA-256: 6261e71e69eda0e8ba2b12ae77a6bdcd96e16c4ff1105608abb93b91dc6a1622
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/wix?keyword=bill+nye+energy+worksheet+answer+key PDF link annotation
    • http://pegizovi.iblogger.org/fowap.pdfIn PDF document text
    • https://cdn.sqhk.co/jogujufuza/bhh0Khd/dragon_quest_switch_demo_save.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465125/normal_5fef6f0d5d8e1.pdfIn PDF document text
    • https://cdn.sqhk.co/dukapudubi/YoEFnnX/tekosuzejesiwulirozi.pdfIn PDF document text
    • https://cdn.sqhk.co/rokajoten/Y1ejiyV/best_new_caption_status_in_english.pdfIn PDF document text
    • https://funopazotasar.weebly.com/uploads/1/3/1/0/131070342/pefip_vegipuzemanom.pdfIn PDF document text
    • https://gogekelonirivi.weebly.com/uploads/1/3/4/4/134438841/2860395.pdfIn PDF document text
    • https://jikolugoxolij.weebly.com/uploads/1/3/1/3/131379047/4334734.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454429/normal_601785dd57bfd.pdfIn PDF document text
    • https://cdn.sqhk.co/matijamaj/hAvjaEr/34708483250.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/Eignfjh/25927649971.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479224/normal_5fe7b970d51de.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/jiwisigetizoxif/wagugewupilowibaguzaj.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/vefobunelo.pdfIn PDF document text
    • http://bikaxubu.rf.gd/gupezasifudezet.pdfIn PDF document text
    • http://rifunasi.epizy.com/72148312268.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/company_profile_layout_design_template.pdfIn PDF document text
    • http://laletanegimiw.epizy.com/sodidubigig.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_off0000de51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE51 5252 bytes
SHA-256: 5982cbebeea50c2d77e51d01fa7e7a23d1bd0e9c000650cc9b49e7e65119631a
font_01_sfnt_off0000f04a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04A 10104 bytes
SHA-256: fe27b66481f387ed100f1baedda5fac7829f9ed257149ec6acb8c02b76bb5d82

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