Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5437937dec44e17…

MALICIOUS

PDF

319.8 KB Created: 2022-04-30 00:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: 40fbfdc344b2e71f53c97650b1eeb328 SHA-1: 3fac93a23733d7b0ce872e40874157a1b83fbc64 SHA-256: b5437937dec44e171b32e397400044e6f573d204018ac70841cb16eb34b55f80
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7582

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 https://sk-elektron.ru/ckfinder/userfiles/files/didexuxajukedaxisa.pdf In PDF document text
    • http://kirpichi.su/kcfinder/upload/files/gexidoditasuxif.pdfIn PDF document text
    • http://www.admion.cz/upload/files/wadixozuxe.pdfIn PDF document text
    • https://womukowewefe.weebly.com/uploads/1/3/4/8/134889771/dawirikufu_gegaruzezaguv_mesewebexokir.pdfIn PDF document text
    • http://baharev76.ru/userfiles/file/26093749362.pdfIn PDF document text
    • http://mauthietkedep.info/upload/files/89341395486.pdfIn PDF document text
    • https://jigadukux.weebly.com/uploads/1/3/4/6/134682377/1086542.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/wifufiboturubiwamusad.pdfIn PDF document text
    • https://jatransfer.com/userfiles/file/pajoto.pdfIn PDF document text
    • http://hydrogears.com/survey/userfiles/files/39982438087.pdfIn PDF document text
    • https://dixawofira.weebly.com/uploads/1/3/5/3/135303501/pikamasarefesujelev.pdfIn PDF document text
    • http://xn--80aamwn.xn--p1ai/userfiles/file/bazodekoviwuduvup.pdfIn PDF document text
    • http://tcpartners.vn/kcfinder/upload/files/bepugikadafub.pdfIn PDF document text
    • https://tafiweva.weebly.com/uploads/1/3/5/9/135993394/1943532.pdfIn PDF document text
    • https://gosikemimikivum.weebly.com/uploads/1/3/4/6/134674661/wirozut.pdfIn PDF document text
    • https://dojeviwenos.weebly.com/uploads/1/3/4/4/134491393/154410.pdfIn PDF document text
    • https://www.todra.com/admin/ckfinder/userfiles/files/2002060425.pdfIn PDF document text
    • https://hongdung.vn/ckeditor/images/files/22558116962.pdfIn PDF document text
    • https://fefajuvojamunuj.weebly.com/uploads/1/3/4/7/134750085/rotenagukenud-wusiv.pdfIn PDF document text
    • http://gzafjc.com/uploadfile/files/vudorifividefijulekire.pdfIn PDF document text
    • http://lncxjzxxw.com/upload_fck/file/2022-3-6/20220306134825363429.pdfIn PDF document text
    • http://forti.in/userfiles/file/fejejotubobenob.pdfIn PDF document text
    • https://nopuderegitiber.weebly.com/uploads/1/3/0/7/130775440/d7c89d3b5eca.pdfIn PDF document text
    • https://champagne-marc-chauvet.com/images/files/toxuneduponexapawerox.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/sunuligunugawelagaxeputil.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/noresejup.pdfIn PDF document text
    • https://hujanuang.com/contents/files/kibilirilizexafoliludi.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/63769745063.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16265642b8660a---zikajutaximurukidig.pdfIn PDF document text
    • http://apple888.vn/luutru/files/pabuvavukiwitinevube.pdfIn PDF document text
    • https://dolukavota.weebly.com/uploads/1/4/1/3/141386697/086ce244355.pdfIn PDF document text
    • https://igmof.com/admin/js/kcfinder/upload/web_file_ig_1/files/87144977524.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=escape+room+game+answers+level+21PDF link annotation
    • http://greffe-cheveux-tunisie.fr/ckeditor/kcfinder/upload/files/95802522584.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_off00048e01.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00048e01.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00048e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48E01 18636 bytes
SHA-256: 2355c75e1588ce89ab37fbf38f45fbdcbd1402ba712fc2f2dd9bb870fe35b25c
font_01_sfnt_off0004be7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0004d696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D696 10836 bytes
SHA-256: 81ebe1063d7eeb89a966790ec8b043aca77988496a1012527c51c926e16d0047