Malicious PDF — malware analysis report

Static analysis result for SHA-256 52062c0ae51b5191…

MALICIOUS

PDF

70.0 KB Created: 2021-03-01 00:30:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 129045741d5497ea3212946f8e4bc658 SHA-1: fe38256af15a2a526d5ab73a5c35df48f06e2334 SHA-256: 52062c0ae51b51918d1c3163f4d72716b851f307c4fc0f1375d6e6fa995d4c1a
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://xajibur.ru/award?keyword=principles+ray+dalio+book+amazon PDF link annotation
    • https://fekobuwag.weebly.com/uploads/1/3/1/8/131858403/rozejefopo-kilur-julikatokik-zexirodevevo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376120/normal_5fcbd8cf4330d.pdfIn PDF document text
    • https://dobeluxujopi.weebly.com/uploads/1/3/0/7/130775615/tugid-vezejepanivapej-zukarotoliti-juliput.pdfIn PDF document text
    • https://safusugefivelu.weebly.com/uploads/1/3/4/3/134346528/1330579.pdfIn PDF document text
    • https://kegebexik.weebly.com/uploads/1/3/4/5/134590944/bazeru_vanuwifusabub_vasotozegeton.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529697/normal_5fe3a055d759c.pdfIn PDF document text
    • https://xomaribimufad.weebly.com/uploads/1/3/1/1/131163516/7636621.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453732/normal_5fec683c273e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468551/normal_60033bed7c395.pdfIn PDF document text
    • http://jawigonoputumun.iblogger.org/wezexuxuwobitep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fe076511d890.pdfIn PDF document text
    • https://panebafizi.weebly.com/uploads/1/3/4/3/134365464/sopuzeso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422144/normal_6010434ef39ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458829/normal_60149e8cd2fca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wedizakur.epizy.com/aurora_movie_link.pdfIn PDF document text
    • http://pojuzuduxotazup.epizy.com/ihss_sacramento_electronic_timesheets.pdfIn PDF document text
    • http://kezitiw.epizy.com/coeficiente_de_extincion_molar.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_off0000d353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD353 5576 bytes
SHA-256: 043fef7b8470e665cca46a7639af688230044c7a47d884fa64512976f20a263e
font_01_sfnt_off0000e643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE643 10212 bytes
SHA-256: 24fbe0d63c7f070fa1e603b214e64a54d668e3ee94ad9cd5509ced1f84edfe6e