Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d44b4d1405653d…

MALICIOUS

PDF

70.8 KB Created: 2021-09-30 21:14:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: d09cd4d79a26c751d459978d93d34d13 SHA-1: 24e1e2afb82d42689ba265e624d30391ea0f2f79 SHA-256: c5d44b4d1405653dcba586d547afe5661b46a985918dfd9b7d3380c431a5bce5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://synerhu.ru/uplcv?utm_term=fruity+loops+para+android+gratis PDF link annotation
    • http://chapaconoticias.com/assets/ckfinder/core/connector/php/uploads/files/74320798604.pdfIn PDF document text
    • http://fanghsin.com/uploads/files/202109270207332206.pdfIn PDF document text
    • http://olympicburger1988.com/uploads/files/potelajivazatow.pdfIn PDF document text
    • https://enerjimakine.com/tsrm1/img/userfiles/file/kunebomuliveni.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/jevudurisu.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/viwuko.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/91236236976.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/savasenemuxaw.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614e8830c3ea3---vujazunegimogezu.pdfIn PDF document text
    • http://www.kymenhome-etsinta.net/tiedostot/files/warutipetunoxufidikot.pdfIn PDF document text
    • http://psn-monolit.ru/img_file/files/84723094252.pdfIn PDF document text
    • http://abwhopewell.com/uploads/files/96601972695.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/161409e76337b3---6761331595.pdfIn PDF document text
    • http://peter-scherer.de/userfiles/file/55945923354.pdfIn PDF document text
    • http://patroha.hu/file/77840311758.pdfIn PDF document text
    • https://davidfoleyinc.com/userfiles/file/40982371193.pdfIn PDF document text
    • http://ohxto.com/uploaded_files/userfiles/files/48222036254.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/41203350889.pdfIn PDF document text
    • https://www.antoniopopolizio.it/ckfinder/userfiles/files/12422130963.pdfIn PDF document text
    • https://aalatour.com/basefile/b2caalatourcom/files/4875371118.pdfIn PDF document text
    • http://taxfreepoint.com/file/70913638037.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/dadariwasasujizofegikaz.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-9-25/20210925060151487231.pdfIn PDF document text
    • https://kitchensofdiablo.com/upload/file/250151260.pdfIn PDF document text
    • https://v-rshine.com/upload/images/files/91710636839.pdfIn PDF document text
    • https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/kotivajemokob.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_off0000b35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB35F 10628 bytes
SHA-256: f14fe504f520f2d592f4f6a89748250bae635510267973e0de28f5447e858867
font_01_sfnt_off0000cb8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB8E 16492 bytes
SHA-256: cc92f627878cc8e383d656da2f02dc7275305e20d0b012ee38609592f32a759f
font_02_sfnt_off0000f548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF548 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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