Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bd39f33235964c…

MALICIOUS

PDF

563.2 KB Created: 2022-03-17 15:02:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: d0256607b00d74c98d2f3a3d6c261c55 SHA-1: 2fa9f60d8d9ab1c4103841fa0abda860205abbd0 SHA-256: 88bd39f33235964ca7f34c2563cbd5f4ca5bc7c5a4247b12d0e83d34116da525
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4382

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
  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://colod.co.za/XSRYdR1H?utm_term=12th+mark+sheet+2019++pdf PDF link annotation
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16206be223f2df---jutuvotozubota.pdfIn PDF document text
    • http://dvere.eu/assets/ckeditor/kcfinder/upload/files/9285479789.pdfIn PDF document text
    • http://mirgalosh.moscowfashion.net/content/xuploadimages/file/ronojivosatij.pdfIn PDF document text
    • http://thegioixedap.net/upload/files/59121653851.pdfIn PDF document text
    • http://abovomedia.hu/_user/file/34895230854.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f89b45c1315---pefudisuka.pdfIn PDF document text
    • http://yanlixin.com/UserFiles/file///wewasipavevo.pdfIn PDF document text
    • https://supremeroi.com/FCKeditor/file/7211391341.pdfIn PDF document text
    • http://djarkitek.com/temp/vinney/HTML/userfiles/file/27804945621.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622ed63e3df6e---61092834005.pdfIn PDF document text
    • http://kepco-group.com/uploaded_files/userfiles/files/xopegemosimegaveji.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/1465204077.pdfIn PDF document text
    • http://limobebe.com/userfiles/files/85847263254.pdfIn PDF document text
    • http://xn--b1adadl3aoabascoo.xn--p1ai/upload/files/buzolofuxekopexut.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20220228054659743.pdfIn PDF document text
    • http://www.gastroblanik.cz/upload/files/83533074916.pdfIn PDF document text
    • http://denda.co.kr/ckfinder/userfiles/files/vasetimakifutoxajev.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/bopibagusebumeravoxi.pdfIn PDF document text
    • http://chroscina.com/userfiles/file/kukubinufufat.pdfIn PDF document text
    • http://livestocksaltlicks.com/ckeditor/kcfinder/upload/files/sifigiduwuluwerusazijow.pdfIn PDF document text
    • https://jasz-pap.hu/UserFiles/file/piremimukefopuwev.pdfIn PDF document text
    • https://zlato-invest.cz/upload/files/74005676553.pdfIn PDF document text
    • http://vipdiler.ru/files/file/gibiwosumisupukiviva.pdfIn PDF document text
    • http://operahazyborlovagok.hu/browser/files/dakinazemolifiwukususin.pdfIn PDF document text
    • http://bannails.com/fckeditor_userfiles/file/37493332847.pdfIn PDF document text
    • http://spasinnia.org/assets/ckeditor/kcfinder/upload/files/rajubemu.pdfIn PDF document text
    • http://prospekt-rostov.ru/ckfinder/userfiles/files/budaji.pdfIn PDF document text
    • http://mrybalko.ru/files/37108580584.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/selewuvitotawi.pdfIn PDF document text
    • http://cjpharmtech.com/upload/files/mogujutipufofivuzujo.pdfIn PDF document text
    • http://hasyo.net/files/file/dizegini.pdfIn PDF document text
    • https://hockeymro.ca/docs/file/miruxopisotebelunuzuve.pdfIn PDF document text
    • http://bacsiha.com/public/ckfinder/userfiles/files/retifuwavalaz.pdfIn PDF document text
    • https://sgpm.krakow.pl/aaeventy/kcfinder/upload/files/zerawokafezupafo.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0008604f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0008604f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0008604f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8604F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0008776a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8776A 16968 bytes
SHA-256: 111fad5f5ec5bf6561dd6b1cb3df84f62cd4b5647b08b9896147bdd3a923dc65
font_02_sfnt_off0008a3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3A4 10856 bytes
SHA-256: 207299eb6411cf88bea0d350e7419ccd250380cefccadc1cfc9be9ea58d1ed01