Malicious PDF — malware analysis report

Static analysis result for SHA-256 8476b2fb010b035b…

MALICIOUS

PDF

325.5 KB Created: 2022-03-01 20:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 530c41ac7314dc2995583e5782d2cac8 SHA-1: bd4a1800798146775830cebc3514877e97dcbf8d SHA-256: 8476b2fb010b035b43a0a4e6eea8f552db0e1faa4acfe529bb3841c5b872a798
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains multiple links, including one identified as an SEO redirector for free downloads, suggesting a lure to trick users into downloading the malicious content. The presence of external URIs and compromised CMS upload links further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6543

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=conjuntivite+bacteriana+e+viral+pdf PDF link annotation
    • http://honeystraw.getrade.net/uploadfiles/file/pegejek.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/piwumoxopakujigazusuwoko.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621e60da73ae4---luseleluso.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/162199fddc28ec---47938447242.pdfIn PDF document text
    • https://sakata-mokuzai.com/db/item/uploads/files/rajizarewuno.pdfIn PDF document text
    • http://tatvan.in/userfiles/file/xakewonij.pdfIn PDF document text
    • http://investbuild.ru/var/upload/file/luxigur.pdfIn PDF document text
    • http://dmychadla.eu/UserFiles/File/fedazogelifofegojabo.pdfIn PDF document text
    • http://dogomanhnghia.com/uploads/files/20223341786.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/161fe57d05be79---kivifogigaxa.pdfIn PDF document text
    • http://prometric.ir/admin/upload/files/53772503050.pdfIn PDF document text
    • http://www.southpointinstitutehowrah.com/admin/uploads/file/nusoworodosapo.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/woxuradulaluzixosove.pdfIn PDF document text
    • http://fotofolliasanlazzaro.it/userfiles/files/jezelenegagiseremipinolu.pdfIn PDF document text
    • http://art-lan.ru/uploads/assets/file/lomemepixezediwifib.pdfIn PDF document text
    • https://zapcdn.space/web/img/podborky/files/86983238127.pdfIn PDF document text
    • https://hotnews.md/upload/userfiles/files/kitigov.pdfIn PDF document text
    • http://paoladebenedetti.eu/userfiles/files/gureboditim.pdfIn PDF document text
    • https://ans5680.preneed91.com/upload/files/21822865183.pdfIn PDF document text
    • http://eggtesting.com/admin/uploads/file/79877311282.pdfIn PDF document text
    • http://pvvc.cz/files/majibuviz.pdfIn PDF document text
    • http://vlajamo.cz/images/file/11274457353.pdfIn PDF document text
    • https://detectagsafety.com/ckfinder/userfiles/files/lumutu.pdfIn PDF document text
    • http://schokofontaenen.de/idata/rukixevijep.pdfIn PDF document text
    • http://art-ball.net/files/file/29931075866.pdfIn PDF document text
    • http://www.salda.lt/saldus/kcfinder/upload/files/8564178772.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/ee0647c4d4ccc1b29086054c32e7d485/lekusolimita.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620cbc5fe064c---86982568791.pdfIn PDF document text
    • http://serbanindustrialconstruct.ro/uploads/files/nitifosu.pdfIn PDF document text
    • http://tries.cz/media/images/upload/file/19796736478.pdfIn PDF document text
    • http://lejonhund.com/upload/51605340725.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_off0004a35a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004a35a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004a35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A35A 10912 bytes
SHA-256: c5f5c5cd5a4f4881b7bda4af3d15923bb7a8058648069b9a8d7dc979ce0e3b9f
font_01_sfnt_off0004bc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC8B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004d3a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D3A6 19776 bytes
SHA-256: 22e22cacc363eb378d47046bdc118e5d31aca653b33a884f8d607f2a91401d7e