Malicious PDF — malware analysis report

Static analysis result for SHA-256 258379c836b8af5d…

MALICIOUS

PDF

332.5 KB Created: 2022-03-10 09:09:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: d29676f47426162a7f2ef947e76bdbee SHA-1: 3b853a07f6b1cddd6f808b54a1680c5e9f9c251b SHA-256: 258379c836b8af5d2caecd3bf286962f4196c1fee194bb869762acec0811151b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5879

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://wxmx.cn/upload/ckimg/files/202202011134362552.pdf In PDF document text
    • https://ndmoyun.com/calisma2/files/uploads/14951396466.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/6cb8cfe801ff24ad8c84480b3fab0f3d/jipitimirabitirodun.pdfIn PDF document text
    • http://lorichphoto.com/pictures/file/97666273547.pdfIn PDF document text
    • http://www.winnicajanowice.pl/kcfinder/upload/files/8742314186.pdfIn PDF document text
    • http://rayhovietnam.vn/upload/files/dejisukedomurusomad.pdfIn PDF document text
    • https://rhuyscampingcar.fr/images/files/niwavazopopoxopitu.pdfIn PDF document text
    • http://japanbizkorea.com/userData/ebizro_board/file/zipoxafugan.pdfIn PDF document text
    • http://thingsantiquesla.com/userfiles/files/xufepogasumisonebazekik.pdfIn PDF document text
    • http://web-news.eu/www/pkpar/userfiles/file/65370725219.pdfIn PDF document text
    • http://heorungminhphat.com/luutru/files/16257249719.pdfIn PDF document text
    • http://easternhoteljeju.com/FileData/ckfinder/files/20220227_FEEAD65B38EDA283.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/162253bd48f0b7---4702588647.pdfIn PDF document text
    • http://all-premium.com/user_file/files/kovoteviba.pdfIn PDF document text
    • https://www.tahitotfalu.hu/ckfinder/userfiles/files/14636736561.pdfIn PDF document text
    • http://dekoblickfang.de/userfiles/file/76888967405.pdfIn PDF document text
    • http://frigotechreina.com/userfiles/files/zewevizes.pdfIn PDF document text
    • https://www.oceaniacroisieres.com/html/scripts/ckeditor/kcfinder/upload/files/bunizabozar.pdfIn PDF document text
    • https://qamous.net/kcfinder/upload/files/86557639739.pdfIn PDF document text
    • http://honghuibio.com/d/files/99026148245.pdfIn PDF document text
    • https://rubenferro.com/userfiles/file/dowotogasokiwurizuli.pdfIn PDF document text
    • http://gzcaifeilai.com/ckfinder/userfiles/files/202203091749412927.pdfIn PDF document text
    • https://thic.muki001.com/plugin/ce1/ckfinder/userfiles/files/dapiwolamugo.pdfIn PDF document text
    • https://mapithanhcong.com/upload/ck/files/1817317632.pdfIn PDF document text
    • http://www.casopisfolklor.sk/assets/kcfinder/upload/files/zuzumibuzevive.pdfIn PDF document text
    • http://tincorner.vn/uploads/files/bulaxejaluxaxunimalixi.pdfIn PDF document text
    • http://songhandiban.com/uploadfile/file/2022021823503473499.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///29650755290.pdfIn PDF document text
    • https://www.nhabe.com.vn/ckfinder/userfiles/files/84547704932.pdfIn PDF document text
    • http://genevacars.ru/public/file/mewipidujegonun.pdfIn PDF document text
    • https://www.lucaslobker.com/minor/ckfinder/userfiles/files/57867131455.pdfIn PDF document text
    • http://vizitcard.kz/uploads/files/17034127578.pdfIn PDF document text
    • https://www.econiwas.com/econiwascontrol/bower_components/ckeditor/kcfinder/upload/files/2618884261.pdfIn PDF document text
    • http://irvinenott.co.uk/ckfinder/userfiles/files/pifugesewamabudibetum.pdfIn PDF document text
    • http://ghanzi.net/kcfinder/upload/files/94640017894.pdfIn PDF document text
    • http://ilsogno-bomboniere.com/userfiles/files/tanalono.pdfIn PDF document text
    • http://www.rhkapadia.org/Admin/plugins/kcfinder/upload/files/32730627382.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20220227_67829F68422D20DA.pdfIn PDF document text
    • https://fecuq.co.za/XSRYdR1H?utm_term=carmilla+pdf+para+descargarPDF 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_off0004c0f9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004c0f9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004c0f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C0F9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004d814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D814 18396 bytes
SHA-256: 7389f9eef6e64ce216d73e2eff3def9031da80bf86917c5ed59bd6ead221ac9a
font_02_sfnt_off00050816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50816 10672 bytes
SHA-256: c38aad7dc63a481294b97cec15981b9b93e25dccebfb329fa2de0907f91ee21b