Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cd33ae4fdd9a50d…

MALICIOUS

PDF

63.7 KB Created: 2021-01-31 14:47:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f99b31c81eed11b76f9b5ad601d8015c SHA-1: bc926652591beff1654bc3f71d857027daf67179 SHA-256: 5cd33ae4fdd9a50d7fcd80d8a98478699dd75206840f8c9fa2f9a03eac81e1d7
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://bologen.ru/aws?utm_term=prevalensi+cerebral+palsy+di+indonesia+pdf PDF link annotation
    • http://trokot-tonirovka.online/word_search_inspirationhchoy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489595/normal_5ffc10523932b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374177/normal_60047e58bd9df.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/hgighfH/visanuwedez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365636/normal_5ff851bb2a4f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384822/normal_6000006c7222d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388841/normal_5fe3b2180b07e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460975/normal_6006c8d3ae654.pdfIn PDF document text
    • https://popetufuwude.weebly.com/uploads/1/3/1/4/131483025/3460835.pdfIn PDF document text
    • http://vsedlyatebya.xyz/xuxetuwogimuworajizitio6hzb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375700/normal_600821a6b38f7.pdfIn PDF document text
    • http://bandalet.club/vortex_cloud_gaming_free_modzdeue.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/tifuwuw/93821724973.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/fukopasipopogadanaforo.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/poruzigibod.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_off0000bc28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC28 5452 bytes
SHA-256: 920bc8c1655d49757d8a4e4dde2831949272f6da89409b963a00569939187893
font_01_sfnt_off0000cec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC8 10304 bytes
SHA-256: 7ea41799dd856f3442c3cb77ad756ccf9f9f45749a5407c2484f14120ec0b179