Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b63a860658a630d…

MALICIOUS

PDF

78.1 KB Created: 2021-07-31 12:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4050ddb0a4d94e740c22de756c84d0bd SHA-1: 61d34b62c66449ed06410e9ba6c1a5f0780dc8d6 SHA-256: 5b63a860658a630d97c108e4e7aa849bae66889eedc4993cac39c083d5da8ad1
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as a phishing lure, likely designed to trick users into downloading malicious content or visiting a phishing site. The heuristics indicate it uses a screenshot as a lure and contains a link farm pointing to potentially compromised domains. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 78 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://coluer.ir/documents/file/talobarujakitolon.pdf In PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076f52622eb1---duzazoditupemobanuf.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607ded3e818d2---fojotagisoxu.pdfIn PDF document text
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/77883770334.pdfIn PDF document text
    • http://nakamurasangyou.jp/app/webroot/uploads/files/75559775333.pdfIn PDF document text
    • https://bancodevida.com/bancodevida/admin/images/image/file/wegeweduvuwiluti.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2021-05-28/images/files/84322405114.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/16082b47e1ca27---66878467110.pdfIn PDF document text
    • https://samarpanbharat.org/trila/userfiles/file/wirogomugebewofokare.pdfIn PDF document text
    • https://binarbaidequipment.com/public_html/userfiles/file/gorufakerogazupimi.pdfIn PDF document text
    • http://aggengr.com/uploads/CMS/file/notasoluzo.pdfIn PDF document text
    • https://anjingliar2.com/contents//files/30136517466.pdfIn PDF document text
    • https://dmitrovka-zn.ru/admin/ckfinder/userfiles/files/pabatategorozuserev.pdfIn PDF document text
    • http://promador.pl/userfiles/file/78261149646.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095e98565db4---ketutibomerodawu.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/55e6d8494d69e36f3c98dd750cc2fad3/makomuzuponijeb.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fad711d9e00---89533727963.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/dugijigegarudu.pdfIn PDF document text
    • http://dieta-plus.pl/userfiles/file/fogosibiwixeke.pdfIn PDF document text
    • https://www.peltonfell.org.uk/ckfinder/userfiles/files/jamuzegawolabom.pdfIn PDF document text
    • http://nikacarpet.com/My_Project/Hamishe_bahar/ahar_img/files/25949317905.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/9v853jic577okpnal6ss8m3fhl/sapajilulepusiwavelesow.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/tetuxidesedomiku.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a41998baac2---kixemuvamuvodida.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=spotify+cracked+apk+reddit+2020PDF link annotation
    • 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_off0000d68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ee9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9C 14372 bytes
SHA-256: 63dc8e9f4c5875ce129c48a0ffdc5fe8b33ef76bff733c3302a60b39a8cebce2
font_02_sfnt_off0001118e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118E 10816 bytes
SHA-256: de530324e267643dbc576465283bf6a7d39016a77c931d99feba81a3bb15d842

Open this report in the interactive analyzer, or submit your own file for analysis.