Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff426e4ae1f32cf…

MALICIOUS

PDF

67.6 KB Created: 2021-02-11 17:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 000f7cde1eef2b9ba4a5bb8f42c44ef3 SHA-1: 275772bbf08762ebdc51b4b562452a06db539d42 SHA-256: 4ff426e4ae1f32cfdf349a3555cca43ecb98d793d201b5820e75452e21ff4dc4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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/wix?keyword=vocabulary+workshop+unit+2+answers+level+d PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421460/normal_5fec6761494e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366622/normal_5ff5fcbf5ebcb.pdfIn PDF document text
    • http://groby-ritual.online/629001787955xars.pdfIn PDF document text
    • http://wekeb.space/drift_trike_for_sale_australianai38.pdfIn PDF document text
    • https://kazowotamije.weebly.com/uploads/1/3/4/0/134012594/dipalisufatewu_pebelosozu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5fd1447359bf6.pdfIn PDF document text
    • https://vomimefime.weebly.com/uploads/1/3/5/3/135316042/16ef1.pdfIn PDF document text
    • https://falufanimuv.weebly.com/uploads/1/3/4/3/134377488/mutugifodulajome.pdfIn PDF document text
    • https://tabupuja.weebly.com/uploads/1/3/4/6/134647436/malifofod.pdfIn PDF document text
    • https://zonujonuwug.weebly.com/uploads/1/3/4/3/134309714/xolemuw_sifex_zitezebujulak_delipipa.pdfIn PDF document text
    • https://cdn.sqhk.co/mitejapeki/OYiiaP2/84076170687.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497095/normal_600105ea6c08c.pdfIn PDF document text
    • http://businessoutsourcing.org/69699665858qpxzt.pdfIn PDF document text
    • https://xusofudubivo.weebly.com/uploads/1/3/0/7/130775679/1279251.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzesowasu/djfM1je/popular_country_music_artists_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/gjjbqjd/fafowoneruvegafevewuzumaf.pdfIn PDF document text
    • https://cdn.sqhk.co/kofuvufexo/8jhVhgg/92627154686.pdfIn PDF document text
    • http://chelobaka.space/teruflff0o.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/bededuxotulapil/fetesajopirelatewozeko.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/rudra_nagam_tamil_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/como_eliminar_alacranes_de_forma_natural.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/wubekinawodozeji.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_off0000cb1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1F 5716 bytes
SHA-256: 2e6d2fe7241554289d6f6dc8f13c01ce26daaafc71540d653a49b14b4c189d4b
font_01_sfnt_off0000deaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAA 10120 bytes
SHA-256: def8968e0c371376360e04871de6e01c72bd9225d30231d9826ef5b0687da998

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