Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af843d53d28a70c…

MALICIOUS

PDF

294.2 KB Created: 2022-02-05 18:07:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: c2892e1adcba08f0596b09be24c4a88a SHA-1: 83f1ba6047b1df21ad2489268b7704ed93a6ef70 SHA-256: 4af843d53d28a70c9f55f56f300a65c52bf99c16b6a78ea529ceffdaf465bb1e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7513

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
  • 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.
  • 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://lovig.co.za/XSRYdR1H?utm_term=video+er+professional+reddit PDF link annotation
    • http://janeblondsalon.cz/files/upload/files/vejepogimumog.pdfIn PDF document text
    • http://chanhbon.vn/media/ftp/file/nubesi.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/6ade981dca1361f04b65feb74920192e/dubejobewudokevikuguwu.pdfIn PDF document text
    • https://indiachristian.org/uploads/files/suxenofekulatamon.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/gemol0srp7qc9n1d1lm9gb5p14/24048124166.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/9ac639fb50e630e502b7dc541aa379e0/javajixanomivufizo.pdfIn PDF document text
    • http://birnagarcollege.in/userfiles/file/woxotavotodewuko.pdfIn PDF document text
    • http://for-man-woman.ru/userfiles/files/tumevij.pdfIn PDF document text
    • https://vico-real-estate.com/ckfinder/userfiles/files/vemib.pdfIn PDF document text
    • http://arredamentoambienti.it/img/file/fobizolotupalukat.pdfIn PDF document text
    • http://fobosgrunt.ru/files/ckfinder/files/36356832377.pdfIn PDF document text
    • http://srmtteaparty.com/uploads/files/202111211735161505.pdfIn PDF document text
    • http://bkpsdm.cirebonkab.go.id/kcfinder/upload/files/81189587493.pdfIn PDF document text
    • http://aid-calais.com/userfiles/file/sopejutojalof.pdfIn PDF document text
    • https://arenerachicamocha.sinecsas.com/ckfinder/userfiles/files/sawof.pdfIn PDF document text
    • https://biodez.lt/i/File/selifuxarolamujojeli.pdfIn PDF document text
    • https://xnkvinatimex.com/uploads/files/48916492511.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1613878e7ba584---33666432641.pdfIn PDF document text
    • https://hamasataccessories.com/userfiles/files/mokuxi.pdfIn PDF document text
    • http://szsahsh.com/uploads/files/14237766702.pdfIn PDF document text
    • https://deshpanday.com/ckfinder/userfiles/files/titiruzilexubuwu.pdfIn PDF document text
    • https://pre-www.bridge-academy.com/uploaded/ckeditor/files/nunoz.pdfIn PDF document text
    • https://bimore.vn/webroot/img/files/gatogubesorefukise.pdfIn PDF document text
    • https://megalight.lv/uploads/files/44685943496.pdfIn PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/13617778045.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/c16c1f11303a1f58a3fc68212d7cc2fe/44348706913.pdfIn PDF document text
    • https://izr.fr/files/dubeworikamiwelosuxupomud.pdfIn PDF document text
    • http://61kidsclub.com/userfiles/file/26489220937.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/161dcf79ec3795---suxeruzomoduvulawinexur.pdfIn PDF document text
    • http://kiko168.com/UploadFile/file/20220128021950629.pdfIn PDF document text
    • https://proia.bg/userfiles/file/bajimerefapanukofopade.pdfIn PDF document text
    • http://e1pl2.nazwa.pl/busy/fotki/file/59827686272.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42D82 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000444a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x444A2 10460 bytes
SHA-256: 3587e326c82becef0b0e86473abf0179d18e102cb3a8b662c3034b938adf8354
font_02_sfnt_off00045c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45C76 17596 bytes
SHA-256: 6a55726f71e000ffac37492bd2bdd3ca5ec76b0512eef11e2de1661e3187ba56