Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b5f2b0be60abe8…

MALICIOUS

PDF

215.2 KB Created: 2022-03-28 18:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 84773b7b49f470af07731d857cc843bf SHA-1: 7893f1c7397ad8b55b1f556a2ec31f6973badf4a SHA-256: a8b5f2b0be60abe8c40bc695774c2c1e88952e81b97ba237631bcd8c2f5d2fe9
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6888

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://mph.cz/upload/files/43936350956.pdf In PDF document text
    • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/52043830161.pdfIn PDF document text
    • https://howardtatelaw.com/UserFiles/File/noruk.pdfIn PDF document text
    • http://bighost.vn/uploads/userfiles/file/94421868827.pdfIn PDF document text
    • http://akgwealthplanner.com/crm/files/xenebuduletebuv.pdfIn PDF document text
    • http://globalone-mould.com/gbw/fckfiles/20220302160524.pdfIn PDF document text
    • http://modern-pro.ru/files/file/lulila.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1620443e8d0f0f---nexoxilatitijodewis.pdfIn PDF document text
    • http://filippodelvita.com/demo/userfiles/file/67193328952.pdfIn PDF document text
    • https://resonanceacteurs.nl/userfiles/file/xoputaremilifapilukin.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/162082aa479f10---vedemamatapobowulijekada.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16218fdaa5970e---90183144911.pdfIn PDF document text
    • http://elt-tm.uz/kcfinder/upload/files/vulurusoda.pdfIn PDF document text
    • http://skidubravy.sk/spravca/ckfinder/userfiles/files/datelasazuxu.pdfIn PDF document text
    • https://hamzakocakoglu.com/userfiles/file/xawasinawikexatatof.pdfIn PDF document text
    • http://www.sanbernardinoverona.it/_admin/kcfinder/upload/files/23941132629.pdfIn PDF document text
    • http://cmorshomecareassociates.org/uploaded_files/userfiles/files/94019707749.pdfIn PDF document text
    • http://anke.de/data/anke.de/uploadfiles/file/vekagoju.pdfIn PDF document text
    • https://www.swiftcargo.com/adminlogin/kcfinder/upload/files/kodijuwuj.pdfIn PDF document text
    • http://gira-classix.su/kcfinder/upload/files/gabakotizede.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/xozezowogele.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/29387422954.pdfIn PDF document text
    • http://tylincms.com/userfiles/files/zibarujolikuxixuxumox.pdfIn PDF document text
    • http://rfaaa.com/UploadFile/file/20220322181522356.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1622e84a746043---divaxikeredexivijobi.pdfIn PDF document text
    • http://kysciencefair.sfiab.com/data/userfiles/file/bexaxenadixakurokoj.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=theatre+the+lively+art+9th+edition+dPDF link annotation
    • 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_off0002dcdf.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002dcdf.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002dcdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCDF 10488 bytes
SHA-256: 206d8a9a38358abac449d345bb430b9a0a151f278b7d34ab610e509f39f9ae44
font_01_sfnt_off0002f4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4B3 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_02_sfnt_off00030ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AB5 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_03_sfnt_off000321d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321D0 17044 bytes
SHA-256: c771f870246ebac1ea1670ab98a6f3da21a9eb8483cfa272a79f3691be77b33e