Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee6693d476ef2cc…

MALICIOUS

PDF

82.8 KB Created: 2021-09-18 21:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: a734ea1854ab59620cbfb3ec87ff481b SHA-1: deccc27ef4d09ed1ced6971a7fe8bd212badf4e9 SHA-256: eee6693d476ef2ccc9f415c02a2f8328de600921da2e051e1c740793e8210c2c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to host and distribute malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and link farm heuristics point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/45cdd7629cfc8e1f1e8f781bfacde196/jiwomujasedoke.pdf In PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161331b6be549b---58691415906.pdfIn PDF document text
    • http://antonio-pelella.eu/userfiles/files/jupofadukowijer.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/e22662827d654c9e6916e9d21f6411b5/30879417061.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16145561433d5a---luxonudefuvis.pdfIn PDF document text
    • http://ytovietnam.net/ckfinder/userfiles/files/38926357575.pdfIn PDF document text
    • http://cnsgawefgl.netsociality.com/upload/files/nopasuked.pdfIn PDF document text
    • http://tc-antey.ru/uploads/files/sogifufo.pdfIn PDF document text
    • https://illustrations.noche.fr/images/files/dirakujivinox.pdfIn PDF document text
    • http://tandprotheses.com/ckfinder/userfiles/files/laponababunapugokano.pdfIn PDF document text
    • http://ambulatorioveterinariocamali.com/userfiles/files/xizudowasevuvozazipifi.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f60ae8d761---32830030435.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec92e8afd5---49583599794.pdfIn PDF document text
    • http://mama-care.com/UserFiles/file/pogezuvipevirun.pdfIn PDF document text
    • https://daulte.ch/ckfinder/userfiles/files/ruwogoramikegikamar.pdfIn PDF document text
    • http://educasters.co/ckfinder/userfiles/files/nekekewetixalutipon.pdfIn PDF document text
    • http://telekommarketing.com/firme_data/files/77816696366.pdfIn PDF document text
    • http://cungcapluonech.com/upload/files/89488963111.pdfIn PDF document text
    • https://waxparadise.pl/userfiles/file/16304389199.pdfIn PDF document text
    • https://graphicart.ro/fckfiles/file/18993647546.pdfIn PDF document text
    • http://ebrinteractive.com/userfiles/file/5633328838.pdfIn PDF document text
    • http://naoshima-habitant.com/images/blog/file/80401303866.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613572b996dc3---76179314804.pdfIn PDF document text
    • http://malbreil.com/userfiles/file/29685623157.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=anugraheethan+antony+full+movie+downloadPDF 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_off0000df4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4F 17692 bytes
SHA-256: b877f97e240a9cf49d044e74a23f1fb6bb9109c1f0868a5c762bcd7326477dd8
font_01_sfnt_off00010c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C93 10980 bytes
SHA-256: 5f954fec0608e5315144c3237c96e5fc839253c437b9b5b7cbd8e6561f548d5a
font_02_sfnt_off000125ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1