Malicious PDF — malware analysis report

Static analysis result for SHA-256 64296eeadf1b8b4c…

MALICIOUS

PDF

91.5 KB Created: 2021-09-03 07:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f70a0465f18ac9e3021ceecb42719ee7 SHA-1: f97d17e0c80554b24bd8ef7c4db08fb5b2439d59 SHA-256: 64296eeadf1b8b4ceaae3de6d8cf179abd35b54d57d46d2b73937510e6458fbf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to numerous URLs, many hosted on compromised CMS platforms, suggesting an attempt to distribute malicious content or conduct phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the nature of the link farm and the PDF format itself often leverage embedded JavaScript for redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • 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 http://chinazzjx.com/d/files/zirewosotimijuvefumimep.pdf In PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa59a180617---64145999126.pdfIn PDF document text
    • http://skomi.ru/img/files/file/wajanora.pdfIn PDF document text
    • http://falegnameriacastiglione.it/userfiles/files/21374362004.pdfIn PDF document text
    • http://hankyunget.net/userData/board/file/52318930413.pdfIn PDF document text
    • http://samilove-payitforward.com/clients/f/f9/f9b0b202ed5d2cb263a89f8a9bd08a94/File/vuwanusew.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d38a739286---fosurozifura.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160755b966ffb9---palafada.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/30885148481.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a4afc059a---69909141123.pdfIn PDF document text
    • http://cukiernia.eu/upload/files/2011028216.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/580e44db19ba2a9f75a3fdb91d277a6e/keduvaniromovodegavepowo.pdfIn PDF document text
    • https://f27szerviz.hu/upload/files/jadugokatuzenitobujorar.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/51bed32b7d1306dbf1f457313df41f5f/5679636197.pdfIn PDF document text
    • https://hotelite.in/userfiles/file/vefowopumudolowabed.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1611c34f9c6e84---7077433.pdfIn PDF document text
    • http://www.mearesandassociatesllc.com/siteuploads/editorimg/file/jodijine.pdfIn PDF document text
    • https://propactionvehiclesuk.tv/userfiles/files/jevidoxo.pdfIn PDF document text
    • http://thomas-zigon.de/images/file/7692206003.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/3eb56dbe0cf53de24881c0f1285168eb/30985747902.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/11993392059.pdfIn PDF document text
    • http://au-coeur-du-temps.com/userfiles/file/81838809719.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/f30cc168242d5f77a7f3cb7cfc26422f/53903903247.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=gurcharan+das+books+pdfPDF 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_off0000ff0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0F 19004 bytes
SHA-256: b48434c5de96635b5c76803b7979b2d44146b6ee8405ec2dff8e38a96236cff5
font_01_sfnt_off00013013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13013 10720 bytes
SHA-256: ce08bb6e9ccd00ebbf81607f0fc5cdac5b275430b1af90411dbcab8dfa138f5c
font_02_sfnt_off00014861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14861 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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