Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fd87abf0f280e7…

MALICIOUS

PDF

72.2 KB Created: 2021-02-08 17:58:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6e675fdd22f928ad07608af68f00d0ac SHA-1: fe34aaf0b478996f416e66ed545f3d7c5501c276 SHA-256: 62fd87abf0f280e7b6d7aa76af45fcf20d8ee67199c60dc175bfa939645bf105
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=mad%20bookie%20android%20app In PDF document text
    • https://fefumuvujudadi.weebly.com/uploads/1/3/1/6/131606087/tunubo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474989/normal_5ff9699b9897e.pdfIn PDF document text
    • https://zabaruwizugode.weebly.com/uploads/1/3/4/5/134596412/wowuzunimupijin.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/Tgddgeu/jitiwigufexinebakijuzig.pdfIn PDF document text
    • https://vewufozokan.weebly.com/uploads/1/3/1/0/131071297/fivinuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476282/normal_5ff4cafeb899f.pdfIn PDF document text
    • https://cdn.sqhk.co/nisisepolo/Hijiiia/nadubesati.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489724/normal_5fcd0f1a18459.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386618/normal_600888b125bb4.pdfIn PDF document text
    • https://vuzavadakugodo.weebly.com/uploads/1/3/4/8/134857872/zukobevedu-fuxat.pdfIn PDF document text
    • https://cdn.sqhk.co/jorubili/ig8jfig/cut_the_rope_2_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/gcvjaie/xopogib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459028/normal_5fdc609bd65d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489848/normal_5ffd878bf39c5.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/JJjgJQp/oregon_ducks_football_schedule_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_5fd60f844e15d.pdfIn PDF document text
    • https://cdn.sqhk.co/vivepovugeli/rigS2hh/1810707450.pdfIn PDF document text
    • https://cdn.sqhk.co/sazobenapur/4hdijid/vikings_ii_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dcab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAB 4952 bytes
SHA-256: ddcaaec234b30bfc90a8587fcdb8e6e70875842ae087e3436fb0c26deb65dd91
font_01_sfnt_off0000ed9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9C 11256 bytes
SHA-256: 72cb55f797b489d71ec0bcecc74542de20298a48ab0e84cd1cb33310978e8d3d

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