Malicious PDF — malware analysis report

Static analysis result for SHA-256 09bad677a945ee06…

MALICIOUS

PDF

165.0 KB Created: 2021-07-04 02:36:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0a18dcd922d72703de71901bb2498647 SHA-1: ce235e38d23458c9f8ee58f01382d77606319a8a SHA-256: 09bad677a945ee064c3e60555474313b7a4a545bc501f4b188c7d2cd898ea1d9
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to obscure the final malicious destination. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3430

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/384b41d3ceaeb469e4b3b53a6fac17d1/votinekewesarozewomanifod.pdf In PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c552857b1d4---ridukivurobijeli.pdfIn PDF document text
    • https://songhong-thudo.com/img/files/ludid.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16083964a3441f---82062092396.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f951dc4ea---muduvakaf.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/malanobetukesuzeragirofo.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/sitoxajamogudopifukuzujib.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088169bd8042---kiwaze.pdfIn PDF document text
    • http://bscartridge.com/pic/jugeveluzupokipu.pdfIn PDF document text
    • https://imahima.xyz/js/ckfinder/userfiles/files/muvadunemesigixiwamawabod.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/2u28nrt5esm81pjg8ovcp0561f/50274063478.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/vegixobuloguverafogema.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d89f79864---18111744588.pdfIn PDF document text
    • http://vitanova-cattery.com/upload/file/80502546520.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609a805f34912---rusazaxife.pdfIn PDF document text
    • https://attack.lt/images/files/gelalikos.pdfIn PDF document text
    • http://www.startservis.sk/novy/ckfinder/userfiles/files/84640940082.pdfIn PDF document text
    • https://etadelloro.it/images/file/detifirisuvafen.pdfIn PDF document text
    • https://vettercycles.ch/userfiles/files/4423842416.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14248e247f---rovip.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c09c14df6b---fivuwokafuzopekolavosired.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/e9k5l6gjj4i55n1qniqeng5kh6/65557609481.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7f3919591---71024902107.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c66088b7590---18120794917.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=say+cheese+and+die+read+onlinePDF link annotation
    • 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_off00023e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23E60 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00025677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25677 10556 bytes
SHA-256: c20bcb858c59a5461c1b1998a07e128bec04125c3e20cea50ae4de3136a2afa3
font_02_sfnt_off00026e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26E65 16592 bytes
SHA-256: 163b74d3ba5678f1f37b6fd8d457ad778205a82338b064a3c343ea289db43e6d

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