Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c81b163639c873a…

MALICIOUS

PDF

250.2 KB Created: 2022-04-05 04:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 53954097bd83cfee1a0729c40989c55c SHA-1: 4ee5badde900366b9621629109979c545a5e6b74 SHA-256: 2c81b163639c873add05517e6beb2609e03a1e7e24aba93a8ac5322feef08f0d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7520

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://cafij.co.za/XSRYdR1H?utm_term=thinking+and+deciding+jonathan+baron PDF link annotation
    • https://xuxizubewida.weebly.com/uploads/1/3/4/5/134505251/mugaworovixib-kazosen-wubedogamepenel-nenov.pdfIn PDF document text
    • https://fobizitejekaz.weebly.com/uploads/1/4/1/3/141362212/1dbf53807f85e51.pdfIn PDF document text
    • https://lepitedow.weebly.com/uploads/1/3/4/8/134885181/vulaxu_zalup_topasojari.pdfIn PDF document text
    • https://www.ibbfvhn.org/recursos/kcfinder/upload/files/32608135119.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/30466565767.pdfIn PDF document text
    • https://bivibonade.weebly.com/uploads/1/3/4/0/134041173/17c4c7ea16d6.pdfIn PDF document text
    • http://wellcomm.co.id/assets/kcfinder/upload/files/dagaj.pdfIn PDF document text
    • https://tefuvaxijo.weebly.com/uploads/1/3/0/7/130739162/kuzif.pdfIn PDF document text
    • http://qdxqw.com/uploadfile/file/fotukamibutug.pdfIn PDF document text
    • https://kagifinozadobet.weebly.com/uploads/1/3/4/9/134902547/jomegix.pdfIn PDF document text
    • https://jowamevo.weebly.com/uploads/1/3/4/5/134511132/3818900.pdfIn PDF document text
    • https://fozabenuguze.weebly.com/uploads/1/3/4/6/134685739/37a57.pdfIn PDF document text
    • https://gumubabe.weebly.com/uploads/1/3/5/3/135302836/597731.pdfIn PDF document text
    • https://tovefejuxula.weebly.com/uploads/1/3/5/3/135325554/75f3be52ea6f85.pdfIn PDF document text
    • https://mygenius.ru/admin/ckfinder/userfiles/files/65975360441.pdfIn PDF document text
    • https://saximomedu.weebly.com/uploads/1/3/2/7/132740398/815326.pdfIn PDF document text
    • https://xaxusadusu.weebly.com/uploads/1/3/4/4/134497069/zebuketasijuxidu.pdfIn PDF document text
    • http://senkardeslerkereste.com/kcfinder/upload/files/79254437386.pdfIn PDF document text
    • http://siripanyalamphun.com/user_img/files/55465663766.pdfIn PDF document text
    • https://bbartemide.it/admin/data/files/files/95327455773.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/81149706421.pdfIn PDF document text
    • https://bp-con-esh.com/kcfinder/upload/files/76799877183.pdfIn PDF document text
    • http://andreevka.topmebli.com/content/xuploadimages/file/sefisuzolewogoka.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003779f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3779F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00038fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38FB6 10760 bytes
SHA-256: 23965bc2b33bff5bbbb40b7c4c5917238c070e54ae31eeedd473e8b8774d4b51
font_02_sfnt_off0003a826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A826 19144 bytes
SHA-256: 9cfb80ac79cdeb208497935be5038753691ec01436e6c3ce34b126e66a34e471

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