Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd36c850398e5b8…

MALICIOUS

PDF

67.9 KB Created: 2021-02-27 04:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9e302cccf65febbe3191c56ed4320583 SHA-1: 31236c24219b35a94edf216aa847e5357b4704ee SHA-256: 3cd36c850398e5b82bcd1cfd9a44caae8e09771660687593aa601d7144a6eac8
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://dugedepap.ru/wix?keyword=beloved+toni+morrison+vintage+pdf PDF link annotation
    • https://lasogevedona.weebly.com/uploads/1/3/1/3/131398076/rilow.pdfIn PDF document text
    • https://faniruwesil.weebly.com/uploads/1/3/5/9/135993686/pekadezopidunobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377704/normal_60290dc68df75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5fea4433b0b01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485435/normal_6026586e447e2.pdfIn PDF document text
    • https://bolukuja.weebly.com/uploads/1/3/0/7/130739437/8dc0d21ef2.pdfIn PDF document text
    • https://rexujebi.weebly.com/uploads/1/3/4/6/134688829/kugawavogepowiror.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/dedet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465136/normal_5fde685182406.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386834/normal_5fde346069c00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475209/normal_5fe0ed6f93d2e.pdfIn PDF document text
    • http://modezewop.mygamesonline.org/nabofogozosukumukudawul.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/bamepofewalada/how_do_i_set_my_subwoofer_phase.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/37616445635.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/interview_techniques_free.pdfIn PDF document text
    • http://ketabigumowun.atwebpages.com/how_much_to_start_a_pawn_shop.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/93812817674.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_off0000cd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD4E 5472 bytes
SHA-256: cf2e1f747478e4cd4f09ba94186afd198e6ae193100f962e30c3cab5e41d4236
font_01_sfnt_off0000dfde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDE 10120 bytes
SHA-256: 61baca831bc13fa74954ce7374f5068ba75ebf5f5c40243239c482250b557402