Malicious PDF — malware analysis report

Static analysis result for SHA-256 4affe444c4e73975…

MALICIOUS

PDF

257.1 KB Created: 2022-02-06 08:47:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 4f7f534637b79163e094658e1209ccfb SHA-1: 36d7338c62e545ad1a2d95436835d0906cda387e SHA-256: 4affe444c4e739759194728e16d7f472ae71c9a0b118773306746f9f4cb82ef1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6801

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=antivirus+clean+app+free PDF link annotation
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/16103d610bb578---51095521813.pdfIn PDF document text
    • http://bjaimama.com/data/upload/2021/09/file/202109210712334009.pdfIn PDF document text
    • http://nemochem.cn/upload/files/koboxaz.pdfIn PDF document text
    • http://gardnersunited.com/clients/e/eb/eb3320446930dd457027df34457c622b/File/27505600107.pdfIn PDF document text
    • https://www.comperat-89.fr/ckfinder/userfiles/files/totadozun.pdfIn PDF document text
    • http://konditsionery-reutov.ru/upload_picture/file/97596755662.pdfIn PDF document text
    • http://xindeshiye.com/uploadfile/file///2021110822002942.pdfIn PDF document text
    • http://xn--80akoseq9f.xn--p1ai/userfiles/file/48561640001.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-12-30/20211230211440439220.pdfIn PDF document text
    • http://ludothequelancy.ch/kcfinder/upload/files/27217356293.pdfIn PDF document text
    • https://regiefranchet.fr/userfiles/files/18979413093.pdfIn PDF document text
    • http://burfel.ru/upfiles/files/42207932429.pdfIn PDF document text
    • http://belovosushi.ru/files/20715748463.pdfIn PDF document text
    • https://koltoztetes-szallitas-lomtalanitas.com/ckfinder/userfiles/files/63168725751.pdfIn PDF document text
    • http://davidthurstonphotography.co.uk/ckeditor/kcfinder/upload/files/6779985334.pdfIn PDF document text
    • http://xn--b1adcbbai1bezln.xn--p1ai/content/File/45373947649.pdfIn PDF document text
    • https://walnutcreekguide.com/wysiwygfiles/file/96884108272.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/38592699031.pdfIn PDF document text
    • https://satybharat.com/ci/userfiles/files/82192499376.pdfIn PDF document text
    • http://liavanhaeringen.nl/userfiles/files/60915408423.pdfIn PDF document text
    • http://www.mattig-accounting.bg/fisiere/file/sotejirudiwevamu.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16193aae254931---98008529783.pdfIn PDF document text
    • http://homeopathyhk.com/files/wixokuzotef.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a0679859a0b---14145987683.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/vobapoxabamesaviso.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1619c318df167e---kujodevan.pdfIn PDF document text
    • https://easy2ticket.com/upload/files/4776582862.pdfIn PDF document text
    • http://shop-cartuning.pl/userfiles/file/surojoditigipiwifa.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16195d64864372---32388273622.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/xivuvobume.pdfIn PDF document text
    • https://www.kensetusokuho.jp/kcfinder/upload/files/dimafatufulo.pdfIn PDF document text
    • http://sh-songshi.com/admin/upimg/file///dunaxibozejapu.pdfIn PDF document text
    • http://glassco.ca/clients/9/99/99aa1728c1dafa3cf8773a75727b87c9/File/87499931648.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/kujukesamizegu.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/53302626349.pdfIn PDF document text
    • http://koreabulk.net/userData/board/file/87985377803.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_off0003979f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3979F 18180 bytes
SHA-256: 35e33fc127c91426688d54469a0ef8fa79c9b80520e564e43df4dd5776b6686c
font_01_sfnt_off0003c563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C563 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003dc83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DC83 10500 bytes
SHA-256: 007e7adeaec94459df5d7155d46315865e3e9b589fb7997e1e1464bd00c2bedb