Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a2a6f3302b1fe5…

MALICIOUS

PDF

694.8 KB Created: 2022-02-25 13:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 82160911296df5e0a4dee1dc4863cc09 SHA-1: 3d4e9a26541ba0a01e68e5e1782c4c2bcae8f498 SHA-256: 18a2a6f3302b1fe51d19abdeded570e7c127bcc16c215b7c1d360c8d03be5c4b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3072

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://colod.co.za/XSRYdR1H?utm_term=bbc+history+magazine+pdf PDF link annotation
    • http://sk4education.com/ckfinder/userfiles/files/fotede.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/27687541142.pdfIn PDF document text
    • https://atavio.ru/files/file/zakabezurulapiwovas.pdfIn PDF document text
    • https://rozetki.moscow/kcfinder/upload/files/dixapos.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/pobos.pdfIn PDF document text
    • http://4bzsoftware.com/Images_upload/files/sawobosonamituvu.pdfIn PDF document text
    • http://comlark.ru/userfiles/files/judinuzefukilubiruwew.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/sawujunawuzigemedopexo.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620dc598a3aa3---36246188125.pdfIn PDF document text
    • https://cakesandcupcakes.net/userfiles/files/45757232690.pdfIn PDF document text
    • https://amc-lda.com/assets/kcfinder/upload/files/86823432531.pdfIn PDF document text
    • https://istanajp2.com/contents//files/64873263091.pdfIn PDF document text
    • http://taikenplan.jp/ckfinder/userfiles/files/vokalalukaminosob.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/xibezatebexenaderozanog.pdfIn PDF document text
    • http://professional-tuner.at/uploaded/file/58022690523.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/lusikanotib.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/450047ffa7ef0b1c10f6d2909a5dd2be/zitawumef.pdfIn PDF document text
    • http://rjbmachinery.com/d/files/34172917826.pdfIn PDF document text
    • https://anakaygame.com/calisma2/files/uploads/fuxamefefi.pdfIn PDF document text
    • http://boletos.luzservicos.com/ckfinder/userfiles/files/15107203334.pdfIn PDF document text
    • https://andana.us/files/files/guzobo.pdfIn PDF document text
    • http://gdlianyu.com/uploadfiles/file/19582716467.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/161caea452c821---79674494266.pdfIn PDF document text
    • https://angkorphotographyguide.com/userfiles/file/zekitomusokaga.pdfIn PDF document text
    • http://itemclinicchina.com/ckupload/files/72960560148.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/161bb825ddabbb---jozusojojibavekumakixawi.pdfIn PDF document text
    • https://xn--80aggmy8c6c.net/UserFiles/File/soledu.pdfIn PDF document text
    • http://autoskola-weiss.cz/userfiles/pozujuzararoroge.pdfIn PDF document text
    • http://zhatuogz.com/uploadfile/file/ribenetemopunironun.pdfIn PDF document text
    • https://peusch.lu/userfiles/files/2094663795.pdfIn PDF document text
    • http://ladyvenus.it/userfiles/files/loverulowapidiwogozaposot.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_off000a5206.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000a5206.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000a5206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5206 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000a6926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6926 11388 bytes
SHA-256: a7b0009d19447089a0cc1bee6900cb5770192ce28151abd8f549a9e5f687914f
font_02_sfnt_off000a8391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8391 18248 bytes
SHA-256: a4788e4e4e574a21ba03d9522212de659be9f90c8379956234bb326b5d655bc7
font_03_sfnt_off000ab3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB3B4 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa