Malicious PDF — malware analysis report

Static analysis result for SHA-256 388559a284bdb90a…

MALICIOUS

PDF

72.8 KB Created: 2021-02-15 06:23:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cee56258ef28877685df3373c24057bc SHA-1: bb7af2656ae57fe06d36dda6f987df8a3d03e31d SHA-256: 388559a284bdb90a1b6c1051c13fb5d7c868ade3b9a91668e28b147b04029510
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://jottigo.ru/wix?keyword=fnaf+games+unblocked+at+school PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475571/normal_601baa2747a19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408348/normal_5fc5a97ec0277.pdfIn PDF document text
    • https://cdn.sqhk.co/lewoxiguj/ig5pjfZ/shareit_app_download_for_android_tv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377931/normal_6002eed440af4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448328/normal_5fedcaa845dea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410216/normal_5fcbda9f36a48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386089/normal_5fcee25ca0027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446045/normal_601cdf04a8974.pdfIn PDF document text
    • http://mojamozegibobav.22web.org/82711995043.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380086/normal_6022fae284cc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_6004a33fc0303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5fe91b5f68cbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388827/normal_6025a308eda6c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mebijido.rf.gd/aufklrung_impfung.pdfIn PDF document text
    • http://pisironebininuw.rf.gd/third_party_logistics_contract_template.pdfIn PDF document text
    • http://nelivizazepafo.epizy.com/strength_of_materials_2_notes.pdfIn PDF document text
    • http://datatoxozapi.epizy.com/raxisajupiliruvisenodituz.pdfIn PDF document text
    • http://telomilabevi.epizy.com/ridudadu.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_off0000df81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF81 5496 bytes
SHA-256: 9604dad6286101ee93422f24dd3e484ffb0c0215424c92606e1068aee962f6e9
font_01_sfnt_off0000f21b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21B 10596 bytes
SHA-256: 7a206cd01b3cdaea4b2827505ac1190c28bb86cb495c6591594503075c0edf7d