Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d385924734f509a…

MALICIOUS

PDF

70.4 KB Created: 2022-02-10 16:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: 24b8ebca7c915e913b68afb24313562e SHA-1: acd5b43c3ac42b2756431d0a166c69f4de496248 SHA-256: 0d385924734f509a6b841d402600907ff19411698354f79fe5e46aad4fcf3c46
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. It also contains numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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://wirut.co.za/XSRYdR1H?utm_term=mamamoo+starry+night+ilkpop PDF link annotation
    • http://fernandopelosini.it/userfiles/files/63971596386.pdfIn PDF document text
    • https://wineart.online/userfiles/file/8133229221.pdfIn PDF document text
    • http://hyosangjo.com/userfiles/file/20211126003440.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/fbcf22b671a420dab869d365acd6d0d3/20164069357.pdfIn PDF document text
    • http://zssulejovice.cz/kcfinder/upload/files/66774046645.pdfIn PDF document text
    • http://csc-0898.com/userfiles/file/20211017040316_lm88j8.pdfIn PDF document text
    • http://alhegazgroup.com/userfiles/file/41776551457.pdfIn PDF document text
    • https://sogelec-eng.com/files/ckfinder/files/48093539215.pdfIn PDF document text
    • http://www.binghan.my/userfiles/file/bujumepil.pdfIn PDF document text
    • https://rh-h1tapi-turbo.com/contents/files/81092312855.pdfIn PDF document text
    • https://ladachess.ru/userfiles/file/luzofopiteniki.pdfIn PDF document text
    • http://yournamebadges.com/withyourdog/cms_uploads/file/55231224458.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/48738093616.pdfIn PDF document text
    • https://tekartltd.com/upload/files/26080134761.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160e571416f899---vopageliloragifevolewim.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/vifmt0u6gkgt85n429pbr8cda4/91109023108.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/79746dac795f65e3619cc8954a8fe1a7/23467403132.pdfIn PDF document text
    • https://gulf-rope.com/images/bulk_images/files/tixivewugizizesunapir.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16116199c53a9e---96843194497.pdfIn PDF document text
    • https://etadelloro.it/images/file/37594570666.pdfIn PDF document text
    • http://xn--5dbfbdrd7azav1bcx.com/sites/default/files/file/56572267243.pdfIn PDF document text
    • http://fastbeatbattlerider.saint-fun.com/assets/upload/files/67626651837.pdfIn PDF document text
    • http://projecthouse.bg/uploads/CKfinder/files/13067455847.pdfIn PDF document text
    • http://szwygs.com/upload/pofirovipagunobagemumaje.pdfIn PDF document text
    • https://needlugs.com/userfiles/files/fusukomejuwefoza.pdfIn PDF document text
    • http://maximaviajes.com/FCKfiles/file/nuxalesosux.pdfIn PDF document text
    • http://park-seversk.ru/other/js/ckfinder/userfiles/files/mepipomesuj.pdfIn PDF document text
    • http://webcertain.ca/contentupload/fckeditorUploads/organization_/file/80147763998.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_off0000a601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA601 20808 bytes
SHA-256: 1be1913823ae3d2bc1351f6c14bcd5efedfe253d58b53c217a796eee66854886
font_01_sfnt_off0000dc76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC76 10764 bytes
SHA-256: 425c35f4b8f183d33828c421eddef0b40105ddc3be434ab67cd1e7088ca21ff6
font_02_sfnt_off0000f50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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