Malicious PDF — malware analysis report

Static analysis result for SHA-256 488413fab719bc08…

MALICIOUS

PDF

62.8 KB Created: 2021-02-21 17:20:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9d41efbea12d955a457734e28cb696ae SHA-1: 0d12b5853c55c8d10efdb8ab6140c6cd1d437347 SHA-256: 488413fab719bc0885398569fd691fc4537a9294eb52247bc97fa8c5a3f1ec68
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://maypoin.ru/wix?keyword=sheppard+software+cell+games PDF link annotation
    • https://cdn.sqhk.co/xawodoze/biegfgh/tegulidiwarofu.pdfIn PDF document text
    • https://cdn.sqhk.co/dutararopat/xP2rhhc/5261135338.pdfIn PDF document text
    • https://cdn.sqhk.co/wedekimelol/bhhtWgc/4180467534.pdfIn PDF document text
    • https://cdn.sqhk.co/penutizufib/i8ks8ia/x_shot_nerf_guns_for_sale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479214/normal_600e84d1cbfe7.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/WLTgjig/gosofuxopetogamowaf.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/dMsGhdC/bunalituzotemanukeraguw.pdfIn PDF document text
    • https://lokawinopigu.weebly.com/uploads/1/3/2/7/132712062/9438508.pdfIn PDF document text
    • https://lapunowelozod.weebly.com/uploads/1/3/5/3/135337348/6138549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474720/normal_5fd318c84f1ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499021/normal_5fc98b7fcdea4.pdfIn PDF document text
    • https://cdn.sqhk.co/gorusuvu/fheWijG/whatsapp_dp_hd_wallpaper_cave.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427795/normal_5ff001ff472fb.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/dazemi/maziladeletikovamidimil.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/80495508504.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/3225119632.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/glandular_system.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/overtime_request_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/15610822836.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_off0000ba72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA72 5764 bytes
SHA-256: 1cc76ad7911876a7f419646a77f8d5b3b3411191a128bbea7c2a6302d3d1a168
font_01_sfnt_off0000ce02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE02 9512 bytes
SHA-256: 9f0afe2877c40c21483d6ec3294dd412a9d111501404549d57c804dd8b85a060