Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8296d7edab5cce…

MALICIOUS

PDF

70.7 KB Created: 2021-02-21 01:48:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9121ceb52edeffba509aee26cd73f60b SHA-1: 9f7fd568017936c82d84292d6c5d83f8406b7952 SHA-256: 9b8296d7edab5cce990657fe4fcaab566cc0554ddd6e2a221cfb5696328fd0a3
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=geometry+dash+world+full+version+apk PDF link annotation
    • https://tovibimatajo.weebly.com/uploads/1/3/5/9/135963052/ludaxegurezawar-nebixonukig-visagi-varevolopipojez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489983/normal_5fff4b4fcc84e.pdfIn PDF document text
    • http://kenufapozij.22web.org/1753972962.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379626/normal_60201268605f6.pdfIn PDF document text
    • https://rojofasefimo.weebly.com/uploads/1/3/1/6/131636828/logevabop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wurunepoxu.rf.gd/luzoviduwunexuvik.pdfIn PDF document text
    • http://palalujopaxuv.epizy.com/lubiveziwinukanun.pdfIn PDF document text
    • http://noximizifurel.epizy.com/black_desert_mobile_korean_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/84806768826.pdfIn PDF document text
    • http://leporib.epizy.com/xevatukigufa.pdfIn PDF document text
    • http://sikadakomog.epizy.com/barcelona_vs_manchester_united_2011.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/xoranopekipozavumiludog.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/77954077731.pdfIn PDF document text
    • http://nanijifipofudo.epizy.com/tafikokuni.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/68542228924.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/picsart_apk_pc.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_off0000d73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73D 5628 bytes
SHA-256: cd5294ad6069df64c9378e7a774d6d0aa4ca6f78d994898c56f8fa5bd7ce19ec
font_01_sfnt_off0000ea58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 10252 bytes
SHA-256: a759397a4b03a2eabf03e47bf3d2514d0c67540aeeddf4341b5710a3cba48171