Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7957b161539b76…

MALICIOUS

PDF

86.1 KB Created: 2022-04-02 16:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 141b699b29e6bf17fd6b41856cbbe460 SHA-1: 7a5bcadf8a749db22c39d67f113eff339bb329c1 SHA-256: cd7957b161539b761c24bf46f0703c3c1732ed79a22d2c759137fbbb11b5fb22
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and a significant number of external links, many pointing to disposable hosting services. This indicates an attempt to lure users to external sites, likely for phishing or to download further malicious content. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://podar.co.za/YmrXLWy8?keyword=what%20is%20the%20power%20to%20get%20wealth PDF link annotation
    • https://kewenarizifosiz.weebly.com/uploads/1/3/6/0/136092989/85df63b059b.pdfIn PDF document text
    • https://boxavaruju.weebly.com/uploads/1/3/4/7/134759985/4610184.pdfIn PDF document text
    • https://bisaderivulele.weebly.com/uploads/1/3/4/7/134744485/gegedizumir_vekofaje.pdfIn PDF document text
    • https://mirinojasuri.weebly.com/uploads/1/3/4/5/134588432/3036452.pdfIn PDF document text
    • http://krajcsovicz.hu/kcfinder/upload/files/42055644357.pdfIn PDF document text
    • http://amunt.madteam.net/ckfinder/userfiles/files/48015190724.pdfIn PDF document text
    • https://guvujuxedudekef.weebly.com/uploads/1/3/1/1/131164066/lofolesuzaw.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/kufugajeno.pdfIn PDF document text
    • http://centronegozi.com/public/kapolumusojod.pdfIn PDF document text
    • http://location-en-guadeloupe.com/js/kcfinder/upload/files/kositobitikaxo.pdfIn PDF document text
    • https://mekowoto.weebly.com/uploads/1/3/0/7/130738632/b9d6ce6b6e422a.pdfIn PDF document text
    • https://msiutilities.net/documents/22825264363.pdfIn PDF document text
    • http://amblesidewindermere.ca/fckuploads/images/file/76709831507.pdfIn PDF document text
    • https://duwelivupegated.weebly.com/uploads/1/3/4/7/134711348/9796361.pdfIn PDF document text
    • https://kunokepipadiri.weebly.com/uploads/1/3/3/9/133997431/4662324.pdfIn PDF document text
    • http://senioradviserab.se/admin/kcfinder/upload/files/81132770708.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1623d0e2ecb2ec---maselamokuzupirixufi.pdfIn PDF document text
    • http://musicpark-live.com/userfiles/file/midorakunijugodaja.pdfIn PDF document text
    • https://orderpoet.com/ckfinder/userfiles/files/60039720252.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16240d5a2b326e---98856301343.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_off0000edc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC5 17272 bytes
SHA-256: 76d94b44d0e96d063d01e74a2b4db3231898614e2652ac98e4dfbf4106a25862
font_01_sfnt_off00011ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000132dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132DD 10504 bytes
SHA-256: 9458e97a96b2777719ccdbb0bfae585ba367cecf1229cf0d18fb4c8e310caddb