Malicious PDF — malware analysis report

Static analysis result for SHA-256 293e496420279d66…

MALICIOUS

PDF

93.0 KB Created: 2021-07-21 08:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 4132c29b75fb7a72632813b26eb5b768 SHA-1: 64d19250111d2e8d2a426b53261ebcac90739721 SHA-256: 293e496420279d66c6ad5fb928d01a2d2a3eb01642fef0f2b7cccb6305df2436
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URIs, many of which point to potentially compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of an IP address literal in a URI and the ML classifier's high confidence score further indicate malicious intent. While no scripts were directly extracted, the structure and heuristic firings strongly suggest this PDF is used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609d8fcf6905f---pakozinuzi.pdf In PDF document text
    • https://casabresciani.it/uploads/file/jokamufevaxapatezar.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/ximotegibosi.pdfIn PDF document text
    • http://cariboohose.com/userfiles/file/dubugotedepenuto.pdfIn PDF document text
    • http://178.62.148.222:300/ckeditor/ckfinder/userfiles/files/97189751708.pdfPDF link annotation
    • http://hondasushi.com/uploads/files/16305896196.pdfIn PDF document text
    • http://commsoft.nu/demo/ktb/wsmbilder/files/90493734209.pdfIn PDF document text
    • http://tootingtaxi.com/survey/userfiles/files/xulunowesuzera.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/93501332197.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160892c0ad6fd1---danajasameredepoda.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0af3526f93---melisexelomadekupul.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bfaf3361a52---97501062786.pdfIn PDF document text
    • http://koszyczarek.pl/userfiles/file/41267807381.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160796819aaa1b---gekuko.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/1b3c0a7f997aebd8f0e52d6317553894/34028233472.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/17065745238.pdfIn PDF document text
    • https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607480902a234---41471650580.pdfIn PDF document text
    • https://tybistanbul.org/resimler/files/73502512497.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/cd1c96fa0b104d0a9a0af915eaca6faf/dimelajixofop.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/8699d87faf4085adfe3c7e111eea14f0/samadojijugorib.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/f5t7bjf8sgcp3365snhg964t3f/jozumovajezituj.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/61653452345.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc7076970b---jukerivupi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=indraworks+software+manualPDF 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_off000106a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A9 10652 bytes
SHA-256: 2442a6a6f07cacff61afa49ac4dc8da4a467547c7e55e16b9fcd9e0a5b6bc936
font_01_sfnt_off00011f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F1E 18356 bytes
SHA-256: e04cc9af63c34c58ea5c4011c344b7455b32f91cc63816fac62576293c7ca6b6
font_02_sfnt_off00014e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E6E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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