Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c81d2fc5fdca4f2…

MALICIOUS

PDF

416.2 KB Created: 2022-04-18 08:49:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: c949f33c110b4b1f061d36c397164513 SHA-1: 04ba062c3f74d28376c73687aec85f27373643b1 SHA-256: 0c81d2fc5fdca4f20d42e529d867903c96597528c797fdb5c0adc7ba6f2dcb60
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5704

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://tdh-europe.org/files/files/vumuziwizunafigu.pdf In PDF document text
    • http://customartdirect.com/kcfinder/upload/files/38729189916.pdfIn PDF document text
    • http://nuk-amro.de/userfiles/file/najedamu.pdfIn PDF document text
    • http://hopkim.vn/upload/files/fiveveme.pdfIn PDF document text
    • https://longhoang.vn/upload/files/82183964797.pdfIn PDF document text
    • https://amoslodge10.org/ckfinder/userfiles/files/72826991389.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621445a0a30a4---ramazela.pdfIn PDF document text
    • http://gulfapex.com/uploads/file/walirolibimowinejosu.pdfIn PDF document text
    • http://de-ko-gmbh.com/ckfinder/userfiles/files/kepavigufivamuxirirenilu.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/48556910830.pdfIn PDF document text
    • http://realtor-madrid.com/uploades/fckeditorfile/49146057256.pdfIn PDF document text
    • http://macierz-grodziec.org/files/file/vazodimipozaru.pdfIn PDF document text
    • http://haki.tincorner.com/uploads/files/56007546195.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/gazidajoramuwuva.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1624b58d720c87---78363152924.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/5f8d5506486fb7c8bbfd4ab8eb17f0a9/91583020581.pdfIn PDF document text
    • http://morebricks.com/ckfinder/userfiles/files/16322529686.pdfIn PDF document text
    • http://xn--80aer5aza.xn----htbdepbihnfb8cyg.xn--p1ai/ckfinder/userfiles/files/zonebeve.pdfIn PDF document text
    • http://strandkrabbe-hohenfelde.de/sites/default/files/files/boferopisev.pdfIn PDF document text
    • https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/82421352983.pdfIn PDF document text
    • http://juncheng.tw/upload/files/kozedinovevetigobemimofes.pdfIn PDF document text
    • http://live-net.it/file/75303071701.pdfIn PDF document text
    • https://chambres-lannion.fr/userfiles/file/suwelevug.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202202060650526803.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20220409234655.pdfIn PDF document text
    • https://jurvamartin.com/userfiles/file/45812926370.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1622bcc8315a0c---todajalut.pdfIn PDF document text
    • http://triomil.cz/kcfinder/upload/files/genuwitedad.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/60180631969.pdfIn PDF document text
    • http://hosma.net/upload/files/72665760207.pdfIn PDF document text
    • https://st-stephens-church.com/upload/File/lekilobonuno.pdfIn PDF document text
    • https://escaletravel.com/userfiles/files/46845135113.pdfIn PDF document text
    • http://cisseo.net/userfiles/files/27702368056.pdfIn PDF document text
    • https://www.seminariosanpiox.it/ckeditor/kcfinder/upload/files/zovewijigukilunutu.pdfIn PDF document text
    • http://greenlasthousing.com/admin/kcfinder/upload/files/vegogixosa.pdfIn PDF document text
    • https://lensmam.com/userfiles/file/zutiwozifizoxilijulaxixi.pdfIn PDF document text
    • https://grupahatak.pl/admin/_fck_files/file/sajulobavurozizek.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=qualities+of+an+entrepreneur+pdfPDF link annotation
    • http://crosswaysrecruitment.com/userfiles/file/nigarotikoxat.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_off0006147e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006147e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006147e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6147E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00062c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C95 10652 bytes
SHA-256: d519557f33536377d65e8296685e230afb8beeca740142f90dda3937e83f2ecd
font_02_sfnt_off00064526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64526 17172 bytes
SHA-256: d779457579f664561dec2798731e6f39914449ed323397c9c2bfbc9984d85662