Malicious PDF — malware analysis report

Static analysis result for SHA-256 941042e95d5ada7c…

MALICIOUS

PDF

148.2 KB Created: 2021-11-30 22:02:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 94a4ef5c057bb160fe2df0441877c646 SHA-1: 1f6c015720594c4249e51649764acc608e90dd53 SHA-256: 941042e95d5ada7ccfdbca82522453b550c3e1b24fe229dece53520403a3cb26
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are part of a link farm hosted on disposable or compromised domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8581

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
  • 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.
  • 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://ketchas.ru/uplcv?utm_term=isuzu+manual+transmission+identification PDF link annotation
    • http://gtlitalia.com/userfiles/files/daxotilasezedi.pdfIn PDF document text
    • http://www.mousumibanerjee.com/fckimages/file/72008459186.pdfIn PDF document text
    • http://architettoannalisatinelli.it/userfiles/files/dikutixakikeragomevawe.pdfIn PDF document text
    • https://gs-hemeringen.de/ablage/userfiles/files/78227145956.pdfIn PDF document text
    • https://rajakeempat.com/contents/files/89277281294.pdfIn PDF document text
    • http://sh-songshi.com/admin/upimg/file///zikalubegodaw.pdfIn PDF document text
    • https://maribon.net/app/webroot/files/userfiles/files/36306343568.pdfIn PDF document text
    • http://markalikonut.com/UserFiles/file/pumifotanatowevefedapef.pdfIn PDF document text
    • http://adamex.ukrkarta.ua/fckeditor/userfiles/file/52635158318.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161a1c7be0f028---wezeneregafekosetagal.pdfIn PDF document text
    • https://n-vv.dk/userfiles/file/44008958976.pdfIn PDF document text
    • http://dzstock.com/Upfiles/file/45517164507.pdfIn PDF document text
    • http://korea-seals.com/ckfinder/userfiles/files/vedusozimarakiwipimok.pdfIn PDF document text
    • https://aashianarealty.com/file/52793200312.pdfIn PDF document text
    • https://alemarferries.alemarsnp.gr/ckfinder/userfiles/files/84078286836.pdfIn PDF document text
    • http://tjsyjdq.com/v15/Upload/file/20211018738419945.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/66778281936.pdfIn PDF document text
    • http://traviet36.com/upload/files/kuwitewumibugawujadufajag.pdfIn PDF document text
    • http://benedictinoselrosal.org/ckfinder/userfiles/files/35558872979.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d2b7d77ee---8221861970.pdfIn PDF document text
    • https://bleikss.com/userfiles/file/sadajurobupijerokomu.pdfIn PDF document text
    • https://www.travelknowhowscotland.co.uk/assets/js/ckfinder/userfiles/files/20736160975.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/161a67aceca287---nenamuvapawonu.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/20211121132175842.pdfIn PDF document text
    • https://kawinlari.com/contents/files/2018952282.pdfIn PDF document text
    • http://gizmakina.com/depo/sayfaresim/file/70866372268.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618c90362f3bf---23005684032.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_off0001e8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E8DE 16140 bytes
SHA-256: 31c29a08d9adb6dc295bbd5c602842d85c39037a123a1424c9470a7de12c4de5
font_01_sfnt_off000212b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x212B9 10748 bytes
SHA-256: cb772a0bc57e755c2fac1153dad1fb671114d00c6830aa2fde20bb942c344b99
font_02_sfnt_off00022b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22B7A 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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