Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f6c7ee66bb8c16…

MALICIOUS

PDF

720.2 KB Created: 2022-01-20 02:02:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 75108230ab34d70ada06bd3259f7c5f1 SHA-1: 7e1d055a84fe54563dded28fcf755437df95ee32 SHA-256: a4f6c7ee66bb8c160359b7bca42141d29b8c3eb85850f2f43281f3463efd2ed8
106 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.2444

Heuristics 5

  • 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.
  • 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 http://milkexim.ru/imgeditor/file/zunarizebimaw.pdf In PDF document text
    • https://stalbeckers.nl/userfiles/image/file/dazuralinufatogemotimuk.pdfIn PDF document text
    • https://areicon.com/images/file/nusoluve.pdfIn PDF document text
    • http://universalgroupautos.com/files/others/94974937294.pdfIn PDF document text
    • https://alutat.com/data/file/47197140125.pdfIn PDF document text
    • https://badrivishal.com/media/wilavulekasasunafogusalo.pdfIn PDF document text
    • http://akbarestate.com/survey/userfiles/files/vanadumeborawesofafivog.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/zaburoxaguxadifiluwu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617b3a60bb7de---napukafosiref.pdfIn PDF document text
    • http://kirpichi.su/kcfinder/upload/files/rakotofexasefupov.pdfIn PDF document text
    • https://www.studiorosaliabusco.it/ckfinder/userfiles/files/62350012666.pdfIn PDF document text
    • http://hailiaquatic.com/UploadFiles/file/95288112382.pdfIn PDF document text
    • http://www.hkrns.org.hk/ckfinder/userfiles/files/57256960306.pdfIn PDF document text
    • https://vinaarc.com/app/webroot/files/ckfinder/userfiles/files/vuxipitizam.pdfIn PDF document text
    • http://loveperfectionschool.com/upload/file/zezofumizoxerukoditefuj.pdfIn PDF document text
    • https://vcvscr.cz/www/www/fckphotos/file/14996495164.pdfIn PDF document text
    • http://zlzljc.com/uploadfile/file///2022010808560435.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/lemuwezo.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/16808582306.pdfIn PDF document text
    • https://www.renouer-auxerre.com/ckfinder/userfiles/files/62717409669.pdfIn PDF document text
    • http://www.ih-consultant.com/ckfinder/userfiles/files/4076214179.pdfIn PDF document text
    • http://www.leposeur.fr/site/upload/ckfinder/files/21077497980.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1613ef835b04ef---35704293638.pdfIn PDF document text
    • https://tekstilkentrehber.com/upload/ckfinder/files/23164044348.pdfIn PDF document text
    • https://szemere-iskola.hu/images/files/90033051766.pdfIn PDF document text
    • https://sanipacific.com/attachment/file/nevar.pdfIn PDF document text
    • https://bimetoor.com/basefile/bimetoorir/files/zaniz.pdfIn PDF document text
    • http://vigova.vn/Images_upload/files/89346447684.pdfIn PDF document text
    • http://antopol.topmebli.com/content/xuploadimages/file/woxemelilajonugotu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/EqozwcbAC44/uplcv?utm_term=movimiento+circular+uniforme+variado+ejercicios+resueltosPDF 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_off000ad1ee.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000ad1ee.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000ad1ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD1EE 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off000ae88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE88D 18136 bytes
SHA-256: a9fddde1f26b6113842a5c10cc541d2a2cb42f717e3b48f515e87167d8d8c7c4
font_02_sfnt_off000b16f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB16F4 10924 bytes
SHA-256: b10781886bc5264ddd0e75f9e71757fbd291810c511a426b0429cc0a0aeaa5e7