Malicious PDF — malware analysis report

Static analysis result for SHA-256 312aa9aee35eec90…

MALICIOUS

PDF

72.3 KB Created: 2021-02-13 11:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 65f51b9cfb0066f0a099ff06b818b932 SHA-1: 4ba8462e4020b70b8dc5f64f8bed63cebd0558e9 SHA-256: 312aa9aee35eec9009ced20884c505154034daf341bba187f1af8d1797239829
164 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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/aws?utm_term=allshare+cast++android PDF link annotation
    • https://xakolino.weebly.com/uploads/1/3/1/4/131453712/sujitinawenikuxik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367621/normal_5fed1f1514adc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488569/normal_60160a829080b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379859/normal_5fccf7ce3ecf6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471692/normal_5ffbe572e47a0.pdfIn PDF document text
    • https://gonibokufelari.weebly.com/uploads/1/3/5/3/135346176/dulokulo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413473/normal_5ff23c504c100.pdfIn PDF document text
    • https://wuvumivew.weebly.com/uploads/1/3/1/4/131410662/vigaxo.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/YhMihid/hideaway_pizza_owasso.pdfIn PDF document text
    • http://xexisutufas.iblogger.org/44505216339.pdfIn PDF document text
    • https://cdn.sqhk.co/jujuziwe/ifKkaii/art_pencil_drawing_video.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://miruwofewap.rf.gd/juice_wrld_robbery_piano_sheet_music.pdfIn PDF document text
    • http://rozazidugo.epizy.com/minions_hollywood_movie_in_tamil.pdfIn PDF document text
    • http://rotaduwifomol.rf.gd/43040519966.pdfIn PDF document text
    • http://gigezevozaf.epizy.com/channel_zero_imdb_parents_guide.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_off0000de55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE55 5016 bytes
SHA-256: 55d3032515f79b5851076805065df15c1f198a7b0544641803f1c011293c39ea
font_01_sfnt_off0000ef53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF53 10952 bytes
SHA-256: 945eec3969296a871439ff50504a3822e4d0e006dc32f237aeddab23d5537b17