Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f17784972ef30d…

MALICIOUS

PDF

63.6 KB Created: 2021-09-23 07:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 4370d05bfafe884ea8ea5193d1fda5b2 SHA-1: e370a80d655c74c74293131afe500335370bc674 SHA-256: 00f17784972ef30d2393df4e28bf0f783975ff9c82562bd2024e75442b608046
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URLs, many of which are part of a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9231

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crewmak.ru/uplcv?utm_term=download+five+nights+at+freddy%27s+2+android PDF link annotation
    • http://guerrazzi.info/userfiles/files/56129673205.pdfIn PDF document text
    • http://jungvassar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/21767394998.pdfIn PDF document text
    • https://sunsoftinfoway.net/ckfinder/userfiles/files/fupego.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/damow.pdfIn PDF document text
    • https://xn--bankkrtya-41a.hu/js/ckfinder/userfiles/files/kifenud.pdfIn PDF document text
    • http://explosivedevices.ru/media/file/fojaniga.pdfIn PDF document text
    • http://guchen.ru/d/files/xibekaxanonafogibuma.pdfIn PDF document text
    • http://enjoybowlramenandpoke.com/uploads/files/zuwetuliwa.pdfIn PDF document text
    • https://geneolock.com/ckfinder/userfiles/files/jilelo.pdfIn PDF document text
    • http://bancasemecanino.com/userfiles/files/xesususumomurakigu.pdfIn PDF document text
    • http://capthepcongtrinh.com/uploads/news/files/17874657848.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/34280549647.pdfIn PDF document text
    • http://reklama-v-sochi.com/ckfinder/userfiles/files/nenevakaxoxikewoseteji.pdfIn PDF document text
    • http://baraanduliaptti.org/userfiles/file/91508954994.pdfIn PDF document text
    • http://kahsport.cz/userfiles/file/jamatugorovifuwibo.pdfIn PDF document text
    • https://publicbridge.pl/userfiles/file/zagegirazomatufuvobepi.pdfIn PDF document text
    • http://wedooverseas.com/userfiles/file/25979875330.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613912444b7b9---64553960065.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/sedizubakonufediz.pdfIn PDF document text
    • http://studiolorenzoni.eu/userfiles/files/negumop.pdfIn PDF document text
    • https://huangs.tw/uploads/files/202109210515048203.pdfIn PDF document text
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/raveketisikokewanoju.pdfIn PDF document text
    • https://bakotech.at/uploads/ckeditor/files/kivulowesirowa.pdfIn PDF document text
    • http://studiotecnicoforace.eu/userfiles/files/nasanul.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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