Malicious PDF — malware analysis report

Static analysis result for SHA-256 9412f0e64aec9635…

MALICIOUS

PDF

275.7 KB Created: 2022-03-28 18:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 0138ff7369ee8e6f5b2f668733d90710 SHA-1: aa188536e01c79f7dbf1476ade5da5d84f119c2f SHA-256: 9412f0e64aec963559db61f218f5b4b80c7aff2d8de937cf504753e9dc60622e
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and multiple external URIs, including one pointing to a compromised WordPress upload directory. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' indicates the document is designed as a phishing lure, likely to trick users into downloading further malicious content or visiting a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8006

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://norin.co.za/XSRYdR1H?utm_term=blood+bowl+injury+table PDF link annotation
    • http://marcth.pl/media/fck/file/39166250262.pdfIn PDF document text
    • http://omatsuri.kr/data/userfiles/files/toxedikomenuwu.pdfIn PDF document text
    • https://www.assofmt.org/ckfinder/userfiles/files/76370666946.pdfIn PDF document text
    • http://nail-free.com/ckfinder/userfiles/files/11137037565.pdfIn PDF document text
    • http://baohanhranghm.com/upload/img/files/mudenesovasajodigaweduzu.pdfIn PDF document text
    • https://poloszita.hu/admin/kcfinder/upload/files/36256589543.pdfIn PDF document text
    • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/11831672656.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/96cf41a7bba1b96f7e8a6b6fab32b5db/xutajige.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1623d6ef2099c5---20429640938.pdfIn PDF document text
    • https://ridistrict3053.org/app/webroot/js/kcfinder/upload/files/nilov.pdfIn PDF document text
    • http://autoservizimensi.it/images/fck/file/waterugalerewasuped.pdfIn PDF document text
    • https://ulsantour.com/FileData/ckfinder/files/20220221_A4740E2D990E1411.pdfIn PDF document text
    • http://lukoilmarine.com/ckfinder/userfiles/files/pezapejonakebagukoteveze.pdfIn PDF document text
    • https://luxury77.com/kcfinder/upload/files/besisapokufe.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/7a1bd22c6677a7ac596260139438bc0b/luxum.pdfIn PDF document text
    • http://bioengenharia.com.br/public/libs/kcfinder/upload/files/8683684654.pdfIn PDF document text
    • http://testwebb.net/kcfinder/upload/files/ruzowu.pdfIn PDF document text
    • http://transsegna.com/userfiles/vedidaken.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16221495590ed9---fuzowuje.pdfIn PDF document text
    • https://maggies-handmade.com/UserFiles/files/wawexobirusaduwolukob.pdfIn PDF document text
    • http://svm.kalistecom.org/img/files/jawamoniwexanaduponi.pdfIn PDF document text
    • https://turbooto.vn/upload/files/81250474745.pdfIn PDF document text
    • http://ever0036.com/assets/uploads/ckedit/files/20220307125229.pdfIn PDF document text
    • http://mojaksiegowa.net/userfiles/file/69333442527.pdfIn PDF document text
    • https://schoolerp.stembridgelabs.com/userfiles/file/nevumopot.pdfIn PDF document text
    • http://www.siposferenc.hu/html/livepi.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_off0003df83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DF83 18668 bytes
SHA-256: efab1811ff4f82ae58bc747ae95143d434c83946a0fa293e17bf987938ce020f
font_01_sfnt_off000410a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x410A2 10696 bytes
SHA-256: 454e2d0f5b6953f2df8d82175910ae44859fbaeeb28a0cc6ac2e0573c06a28b7
font_02_sfnt_off00042951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42951 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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