Malicious PDF — malware analysis report

Static analysis result for SHA-256 f970e0e934992f00…

MALICIOUS

PDF

67.9 KB Created: 2021-05-28 00:25:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 046569af2c9224d2d01b3dc5020a16be SHA-1: d090ecccce9c1c3bc22f8b0c84e765794b3a9719 SHA-256: f970e0e934992f00c4e2a7c33fbde6155e2def2daf7ee7c88dd5597b7b8f3bf4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous links, many hosted on compromised CMS sites, suggesting a link farm designed to redirect users to malicious content. The presence of a URL with 'download capitec app on my phone number' in the query parameters strongly suggests a phishing or scam attempt related to mobile banking applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8963

Heuristics 5

  • 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
  • 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://scro.ru/pic/file/30972594497.pdf In PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/pek2ereot0qj3oue10gq71fdmo/guvorelugulukisunovak.pdfIn PDF document text
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609298062dcbc---29646915839.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/68ddb9d30ba4a6cc42e2dd22b0ec491c/62091146884.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/nuvutewavebuku.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1607c913168a91---wapapogamosefiropuwiw.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608521cc685a8---pexegibitarapovolosebi.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/8fk8ftmun5n27i9s6qs024g8k4/vavukinogeburunizijerita.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607593224d6d9---xuvalalazetagotada.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070334aa56c8---xularukorivovodak.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/477f254fd5e547305c07f6a951482700/55015133723.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0e5f62685---88197228245.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160999f2a22188---93171732183.pdfIn PDF document text
    • http://exmar.it/foto_fck/file/nutenuwenu.pdfIn PDF document text
    • http://bioident.pl/photos_fck/file/45267018677.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=download+capitec+app+on+my+phone+numberPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE36 5468 bytes
SHA-256: 2251129a1bffad2340c85963cab42d4847ffea03ac6084cc4976fe680ae6ebc3

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