Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f9200598d6fbdd…

MALICIOUS

PDF

84.9 KB Created: 2021-08-26 03:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e0d2ff8150ee02b9129a4af33c859beb SHA-1: da79cc6fb4351fc0e49b83f9f01d8b4fc6895516 SHA-256: a2f9200598d6fbdd6a19796ee95176f160f7c2ef1fe6d2f4adf18b1575567bce
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The file's structure suggests it's designed to lure users into clicking links that lead to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://414movement.com/wp-content/plugins/super-forms/uploads/php/files/80f5025db8d9669d3d3aa7bd1b15102a/65194648448.pdf In PDF document text
    • http://yanarfabrics.com/firma/files/62097160675.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cac9b908f39---99659239331.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16080e0d31cde3---nuwevejizafazilived.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c70666bd1bd---42220101479.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8e17970fd---xunamod.pdfIn PDF document text
    • http://artepcb.com/upload/files/sutulujakuvawixexovolute.pdfIn PDF document text
    • https://darkoyunpin.com/calisma2/files/uploads/wegokifuguvokogave.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d09d6827494---xurixabidagajizotabegik.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/zogulumomofukesivuxo.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160828f88c7c8f---gogizosijop.pdfIn PDF document text
    • http://geostudio.eu/userfiles/files/22914436273.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/704c473cc09e39926c710a4c445e55b1/16452996420.pdfIn PDF document text
    • http://jurabos.nl/include/editor/file/dolapebebusevoxajidemole.pdfIn PDF document text
    • https://moulindelarroque.com/userfiles/file/88246615943.pdfIn PDF document text
    • http://caryhigh1987.com/clients/41333/File/87480163194.pdfIn PDF document text
    • https://aldaserwis.pl/ckfinder/userfiles/files/13793080545.pdfIn PDF document text
    • https://rivaflo-south.in/userfiles/files/48391679659.pdfIn PDF document text
    • http://biosite.ru/images/news/file/semifebovipaterodo.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/7cqjsuf5mulosgv8iemcrda413/30561969296.pdfIn PDF document text
    • https://protectname.xyz/whoisprivacy/userfiles/files/66541398295.pdfIn PDF document text
    • https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607662d86dbe8---lulixapaz.pdfIn PDF document text
    • http://10glazsikeyrosa.ru/file/mewupotodujag.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/59b52c246adf5fe5799cc66876fb4517/bikademalali.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=97cm+to+inchesPDF 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_off0000e80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80F 10308 bytes
SHA-256: 80bce003525226ad2b34d4b235e4d63706721130da4317645f966a0f59942a3a
font_01_sfnt_off0000ff29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF29 17036 bytes
SHA-256: 5f0721f96596eb9c4a2878cda89d16d206e0001b705381b0b16a3a2abfab14c9
font_02_sfnt_off00012b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B83 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1