Malicious PDF — malware analysis report

Static analysis result for SHA-256 0007c61434a6538c…

MALICIOUS

PDF

118.7 KB Created: 2021-06-06 20:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3097c4ef4abbb050c544ca6fc2e82f89 SHA-1: 5dea5cb3ecf54966fe778e2cd1ad98a99d08529c SHA-256: 0007c61434a6538cc8f5a80db800b1da7214666f0a8fbc3882851b8b6359a6a8
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm directing to numerous URLs, many hosted on compromised WordPress sites or disposable domains, suggesting an attempt to lure users to malicious content. No scripts were extracted, but the overall structure and URL distribution indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 https://pistant.ru/uplcv?utm_term=is+ceo+capitalized+in+ap+style PDF link annotation
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/24876890886.pdfIn PDF document text
    • http://kaies.cn/upfiles/file/faluwipanakunejetokamibi.pdfIn PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/3b01398cd520a5776dbd07b909a04a25/zebupopomipati.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/f8eceu6iobhmmof0ef8kt6dtti/kudotokuzixuxofupibetiz.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2f1d78ebc---konov.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/64ab52cb3b28b8143b2472dae1bf8d71/dexopizufanaf.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/ra2c387j8oj7tesvf466lm6eh1/sifuzoron.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/21635123425.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/dawuwon.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/hm5qjnlcm2lv195ff8ju5pm992/wefajoliwojoganoped.pdfIn PDF document text
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a08d6980ec0---16407178874.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/cd4eeca6a76d9729dad04c0155080c6b/xafutetedop.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16093c9b29afea---31610385196.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/srmtgstcgnncf3o4152mctr54i/jurorojapevamu.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/927cc9d632c44f31a3f1a348b4460ea7/84351599719.pdfIn PDF document text
    • http://cfacgroupe.com/uploads/FCK_files/file/34063876168.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000193e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x193E1 5060 bytes
SHA-256: ef2ce22e5228096f087aa51c19c99e0d3d0cc2b52a39d035f5583cc31678947a
font_01_sfnt_off0001a53d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A53D 12080 bytes
SHA-256: d3d042c1020c24cef5d773cbd13966b48340f69123d6b73d7a2225d38c5db5aa