Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0ac6a9a9c4688d…

MALICIOUS

PDF

64.6 KB Created: 2021-02-02 19:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2a77048bbcfae7591d7c5eba2dd33375 SHA-1: d1504b388470f0e6928f44f2c3b3daf7a1205d30 SHA-256: 9f0ac6a9a9c4688d3f3be9f7a2f857520183264720bb0685cb707c1cd8211236
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=vintage+floral+frame+templates+free+vector PDF link annotation
    • https://cdn.sqhk.co/gozolosew/heihbii/zezodamuvokesewizifipaxu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496170/normal_6002821f9c928.pdfIn PDF document text
    • https://cdn.sqhk.co/sinewuvemomi/EjhSjab/muwalamodaxirojibiwo.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/jcjhJLm/3750528394.pdfIn PDF document text
    • https://cdn.sqhk.co/velomegu/MUie2ie/40247322977.pdfIn PDF document text
    • https://cdn.sqhk.co/lebereme/haPcijL/68644425198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5fd79df9a6111.pdfIn PDF document text
    • https://cdn.sqhk.co/vanatuwo/ieghaie/bang_bang_bang_just_dance.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460048/normal_600adf0e8cc58.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/6jhJibq/fawivujikikediw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449779/normal_60164ff52a6a8.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/lomogas/lifoxizogolapujan.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/96625746042.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/intro_maker_without_watermark_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/63815115005.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/dazulo.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/t-_shirt_layout_template_photoshop.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/46558099586.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_off0000c34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC34B 5360 bytes
SHA-256: 421744867645d2deb9cedb4c603373762daeb98e4fc31f88b8d6a3f869db9279
font_01_sfnt_off0000d586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD586 9372 bytes
SHA-256: ed489b035f0ebe1c7b76ec27ac5e3101ae70b9874fb036a2662a885a0e12465a