Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f638ff627efed39…

MALICIOUS

PDF

74.0 KB Created: 2022-05-09 03:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 28d8ddaa74208e2b98a53f5ea94f5aab SHA-1: 061224bcf7ed7a6104f7d78f6da1249249c734db SHA-256: 8f638ff627efed39c0ff35e4c8895f1d0d81111835c7b9ee978ee0fd911cc94b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://yubit.co.za/YmrXLWy8?keyword=pesticidas%20en%20la%20agricultura%20pdf%20gratis%20de%20para%20en PDF link annotation
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1626fadbc2fd5e---dumuvuwametutom.pdfIn PDF document text
    • https://pecel-piok.hu/images/files/45465349710.pdfIn PDF document text
    • https://legawegik.weebly.com/uploads/1/4/1/4/141444970/sevin.pdfIn PDF document text
    • http://litroshaber.net/resimler/files/rubaset.pdfIn PDF document text
    • https://dioss.eu/files/ckfiles/file/28987398825.pdfIn PDF document text
    • https://nijolonarezop.weebly.com/uploads/1/3/3/9/133999518/4863989.pdfIn PDF document text
    • https://lolotabo.weebly.com/uploads/1/3/4/0/134018256/luruxewolesokolis.pdfIn PDF document text
    • http://viaecommerce.com.br/kcfinder/upload/files/wexipegexuvemo.pdfIn PDF document text
    • http://chothuexehochiminh.com/userfiles/file/46384771466.pdfIn PDF document text
    • https://batdongsandothanh.vn/luutru/files/8141446506.pdfIn PDF document text
    • http://bakefruit.com/uploads/files/202202121746372756.pdfIn PDF document text
    • http://cjpharmtech.com/upload/files/wusugef.pdfIn PDF document text
    • https://betinidax.weebly.com/uploads/1/4/1/3/141335716/53024ef82c2fa.pdfIn PDF document text
    • https://xivegatekunerer.weebly.com/uploads/1/4/1/2/141259182/4ca20daf.pdfIn PDF document text
    • https://pagamasevin.weebly.com/uploads/1/4/1/4/141401895/nubelun.pdfIn PDF document text
    • https://wuzituvivewug.weebly.com/uploads/1/3/5/3/135306668/3271420.pdfIn PDF document text
    • https://pimetukuke.weebly.com/uploads/1/3/4/0/134017259/6e40ab201eab3c1.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/65025432687.pdfIn PDF document text
    • https://shop-ecobati.com/medias/upload/files/nuvemewatumozumuw.pdfIn PDF document text
    • http://anexbd.com/assets/ckeditor/kcfinder/upload/files/gegibelo.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_off0000b9df.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b9df.bin)

Related samples 5

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_off0000b9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DF 10776 bytes
SHA-256: 444e689249c65a601e223b1e359a51e0e3265e8da3f53d452dfedc70ead3cfc0
font_01_sfnt_off0000d29a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29A 17712 bytes
SHA-256: 66d527220a29b9e0ccf8cb6b1a34c7be222dd9df30fad4aa8f2fd2f0068889bb
font_02_sfnt_off0000ffd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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