Malicious PDF — malware analysis report

Static analysis result for SHA-256 df01749197f554cb…

MALICIOUS

PDF

78.2 KB Created: 2021-09-07 12:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c6dfea12e959d54fb47416c9dfd45c59 SHA-1: c326b681222c58a2ae86c898376f1052bb9e8bfe SHA-256: df01749197f554cbaeb930d9c77b20fec291aa2658f1eb64cb81ed3c3384df12
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, containing numerous URLs pointing to various domains, many of which are associated with compromised CMS uploads or appear to be disposable hosting. The primary purpose seems to be directing users to external sites, likely for phishing or to download further malicious content.

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 https://kga-am-adlergestell-ev.de/kga/ckfinder/userfiles/files/14199955487.pdf In PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/3c2e1048375aaef5d6d933217a3d872b/55743638172.pdfIn PDF document text
    • https://appvid.eus/userfiles/files/sadiluxawirazivunojapa.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/6fc0629864849adac82a34fa1deae913/69701480424.pdfIn PDF document text
    • https://dm288.rs/slicice/file/25865504512.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/pitiwitinu.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/siduwolimugekitug.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a05dec775e4---34973580288.pdfIn PDF document text
    • https://jaiminsales.com/ckfinder/userfiles/files/97681102009.pdfIn PDF document text
    • https://www.auto-ecole-acm.com/ckfinder/userfiles/files/40015976707.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/zifisigifirivemipip.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/glavtmir2ejqm9nf2fsgliajev/vitikitelakopofov.pdfIn PDF document text
    • https://ost-fogging.com/upload/files/94395452013.pdfIn PDF document text
    • https://thebottombillion.org/business_school/uploads/file/66463031560.pdfIn PDF document text
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/1268b3lc7iqi23alj5kljh812e/zipomapakonut.pdfIn PDF document text
    • http://sam-global.info/files/file/xawusiben.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/34egj78rq7evu36vcseo7cmbs3/22170890798.pdfIn PDF document text
    • http://www.herbertvanderbrugghen.nl/draft/78788195869.pdfIn PDF document text
    • http://taociren.com/upload/file/210818104629640626ar6swx4ncrsg.pdfIn PDF document text
    • http://canphantich.net/Images_upload/files/tulosudugogafepiximubib.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/17eb6a663ad8b0a600783ba753c6e101/55868461053.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=cotton+spinning+process+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_off0000cf9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9E 17044 bytes
SHA-256: bd0df022810c2cbdbaaa2a3e249726ef650cbd0912637b7b17d19a4a4c2f4e7c
font_01_sfnt_off0000fb52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB52 10616 bytes
SHA-256: 88d54d34f88f5dd8f196ea363757a18684133c228b68cfd0c63148bbff8b651d
font_02_sfnt_off00011394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11394 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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