Malicious PDF — malware analysis report

Static analysis result for SHA-256 deaebb194f6dbf67…

MALICIOUS

PDF

83.2 KB Created: 2021-09-06 01:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 37a19b67393d55fc8347810d9a95506d SHA-1: 04d0f75cc9a477c6e9e61fb306c9fde2c89af32d SHA-256: deaebb194f6dbf67d12baad0f94c522e02c50a21db24ab779b565c099a640e2e
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external links, many pointing to compromised WordPress sites or disposable hosting. This indicates an attempt to redirect the user to malicious content, likely for phishing or to download further malware. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4208

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 http://hifitness.hu/userfiles/file/pupevuxusatadaga.pdf In PDF document text
    • https://xehowo24h.com/images/ckeditor/files/48057570549.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/668f9e761b588f265739bbadf7d3433e/jejixibonifomebositatomo.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/106e3472618c3d7623689109b638a26e/dowuxuletokagavosus.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/xokax.pdfIn PDF document text
    • http://www.anapharmata.hu/ckfinder/core/connector/php/files/23745361663.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e130c40d7---midoluzodefudumuzowilegi.pdfIn PDF document text
    • https://ptogel2.com/contents//files/29422910014.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/59786789077.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1610903ee45f6d---sigubunivozexinateki.pdfIn PDF document text
    • http://aweibel.com/Photo/file/lapoledevijebivaloteladiz.pdfIn PDF document text
    • https://mimpiindah2.com/contents//files/zubugitavawesezufug.pdfIn PDF document text
    • https://activepymes.com/pub/file/34860286273.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c7840dd25---sigemepubar.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/444a0113198190ccd7130d4ab6c35db4/befigavo.pdfIn PDF document text
    • https://tisuputih.com/contents//files/7842599007.pdfIn PDF document text
    • http://tsutae-f.com/js/upload/files/wesivotixun.pdfIn PDF document text
    • http://jrjohnsonfamilyreunion.com/clients/0/09/090f04f22b165063c0e57546eb93b169/File/bunosikomozuvabamefapes.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/msftv6i66kn3a2tabm868qev61/gefejirubewabede.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/turopabibinufimexawovi.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/52350312853.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613424e580998---mumovefunebiwubuvuwij.pdfIn PDF document text
    • https://andrejc.si/files/file/wuxokupi.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/64876875488.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/b0sd8r6cijl7h6l0tvsj5ko492/kuxikovejapolofoli.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=atp+challenger+calendar+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F7 20452 bytes
SHA-256: c2aaeb91f6b99f84bcf376f960baad8f3569576f54180c102c16c152b24470da
font_01_sfnt_off000129c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1