Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d373fe32c1b0d44…

MALICIOUS

PDF

74.1 KB Created: 2021-11-26 05:54:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: c735823b6ae6da8155558cea0d2822e9 SHA-1: e35c802771b8cdea342cb71d5877caa37a259159 SHA-256: 0d373fe32c1b0d44f5912f83b8e1bf3f871da18977c0d9fb821753a13118e7ec
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous URLs, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://laborke.ru/uplcv?utm_term=config+total+war+warhammer PDF link annotation
    • http://zeci.nl/im/image/pojerez.pdfIn PDF document text
    • http://www.aaar.cat/assets/js/ckfinder/userfiles/files/vafakivavi.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617c74a76eade---vogozezizivagexup.pdfIn PDF document text
    • https://dnsbp.com/all4help/fckuserfiles/file/75922217585.pdfIn PDF document text
    • http://mcenterdk.ru/fck_editor_files/files/jelipezimejuvalivavideba.pdfIn PDF document text
    • https://ayurmitra.com/files/file/8761467045.pdfIn PDF document text
    • https://coolinterier.sk/upload/files/5089940479.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/33463765454.pdfIn PDF document text
    • https://netron.pt/app/webroot/media/files/76657544179.pdfIn PDF document text
    • http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/45814222024.pdfIn PDF document text
    • http://www.novosib-sport.ru/ckfinder/userfiles/files/kijokusokanijofuwigolesas.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/161670d9f1b749---kolasekuva.pdfIn PDF document text
    • http://consoles-a-gagner.com/fckeditor/userfiles/file/76783297610.pdfIn PDF document text
    • http://balogmihaly.hu/UserFiles/file/503788450.pdfIn PDF document text
    • https://vnmmalta.com/userfiles/file/xoxejitiresuwamituw.pdfIn PDF document text
    • http://inciboya.com/resimler/site/files/67092181931.pdfIn PDF document text
    • http://perilatomsk.ru/ckfinder/userfiles/files/93949016994.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/6674355152.pdfIn PDF document text
    • http://cungcapbaoduongcuanhatban.com/upload/files/13134347705.pdfIn PDF document text
    • https://anhhuynoithat.com/asset/files/gipalobitadutowigapipoko.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/5f7d615d500171fef662e0123f6ccc29/gifugafegosof.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619c656c063e7---96404512258.pdfIn PDF document text
    • https://innovativallatgyogyszer.hu/fileok/file/fapojexamenikikakivojijoj.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1619d387bc9496---9723340896.pdfIn PDF document text
    • https://jagamimpi.net/contents/files/18742312735.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_off0000c026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC026 16692 bytes
SHA-256: 33ed48f3cc89cb7aafe95a11c199ec6e764ed537a0778593315c86c891d5d606
font_01_sfnt_off0000eb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB98 10612 bytes
SHA-256: 0617fdc0a670a9b2977fe0db0bd4f078b750f45d464f8c90c3beb2ca84d2f4ee
font_02_sfnt_off000103c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C2 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336