Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01f0caccf225a7f…

MALICIOUS

PDF

81.7 KB Created: 2021-09-02 12:36:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a9471e901a5a4ff0fa3aba1932864cfa SHA-1: cc93e3c191f3a56ea5b6f90c13ea991c871f9a22 SHA-256: b01f0caccf225a7fb1c72b328a903c5f2bf076300747080022c75c22d62e23fe
156 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites, many of which are hosted on WordPress installations using the Formcraft plugin, suggesting a link farm or phishing lure. The presence of these links indicates an attempt to redirect users to potentially malicious content, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612a9499c1f25---mudamutokajawiwimov.pdf In PDF document text
    • http://andlupa.com/userfiles/file/kopovegazigo.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4d85798fb---soturaxa.pdfIn PDF document text
    • https://kultmotor.hu/images/files/gijonijaxugofikezazel.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607728160f26c---39257342763.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/nowuxibudefaxizop.pdfIn PDF document text
    • http://dansungsala.com/uploads/files/bopopadubovavatepoxuv.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc52c619e06---vejanogoweb.pdfIn PDF document text
    • http://audidalys.lt/ckfinder/userfiles/files/83063945061.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/4cf359e0cda6a6625dabd40a4d31568b/lajaxejeg.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d89c3af4f---68283462768.pdfIn PDF document text
    • http://doks-films.com/pcms/content/file/5459317234.pdfIn PDF document text
    • http://architettogherardi.eu/userfiles/files/14628054863.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6ee157acb---rateguzemabijiku.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607c06be70cc5---xenitot.pdfIn PDF document text
    • http://goodwynva.com/clients/d/de/de91e19d235d8a3764238851c6b73f99/File/57527175368.pdfIn PDF document text
    • http://coeb.eu/userfiles/files/70561988821.pdfIn PDF document text
    • http://lapenya.cat/imgjovesnaves/file/47074155162.pdfIn PDF document text
    • https://mimpishio2bet.com/contents//files/nexezexanimitepig.pdfIn PDF document text
    • http://24hnbc.com/assets/ckfinder/core/connector/php/uploads/files/supinologedafuxefi.pdfIn PDF document text
    • http://lateonsettay-sachs.org/userfiles/file/87369187825.pdfIn PDF document text
    • https://ymy-tea.tw/upload/files/4862160187.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/tufata.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d69644dd4d2---82976921491.pdfIn PDF document text
    • http://bud-med.eu/userfiles/file/25537213854.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=grupos+terroristas+en+el+mundo+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_off0000d8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DE 18520 bytes
SHA-256: 4c7ff7a246f1b0f9c40fce2cec88f7d0bc40bf2efff4bd7c61da39fc24586bd7
font_02_sfnt_off0001200e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200E 10796 bytes
SHA-256: 07e8b9ef7ea1cbb76d15306701a026afe1cd37e4ae50823dba13183dd6a8e850

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