Malicious PDF — malware analysis report

Static analysis result for SHA-256 589fe7473fd6758f…

MALICIOUS

PDF

55.8 KB Created: 2021-09-28 21:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: aef0777630305277dd2cbcc94a533d65 SHA-1: 62c1419a21765fe641320294e5d1c2511ab97fd8 SHA-256: 589fe7473fd6758f3209c5661e3cc935c4665edd627ec5cf86dfa35687bf324c
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains embedded JavaScript which is a common technique for executing malicious code or redirecting users to malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm, suggesting a phishing or spam campaign. The embedded JavaScript likely attempts to download and execute a second-stage payload or redirect the user to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8244

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://catamma.ru/uplcv?utm_term=android+doesn+t+rotate PDF link annotation
    • https://www.caissedesecolesdu5eme.fr/backoffice/ckfinder/userfiles/files/32177103922.pdfIn PDF document text
    • https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/97316336896.pdfIn PDF document text
    • http://rld-carbon.ru/file/tusiwetivo.pdfIn PDF document text
    • http://energosol.pl/images_cms/file/dogixigabejibilowanulojo.pdfIn PDF document text
    • http://reylab.com/userfiles/file/gikar.pdfIn PDF document text
    • http://dekoblickfang.de/userfiles/file/48972841348.pdfIn PDF document text
    • https://mvpartners.be/images/uploadedimages/file/77006036252.pdfIn PDF document text
    • https://aymexco.ro/ckfinder/userfiles/files/gipixiwerinisisisipinen.pdfIn PDF document text
    • https://5uempat.com/contents/files/fekokajif.pdfIn PDF document text
    • http://ducnhua.com/upload/files/98375317099.pdfIn PDF document text
    • http://xhiehchin.com/Xhieh_News/_file/likisijifiwaxiw.pdfIn PDF document text
    • https://komunalno.vrgorac.hr/files/43105112980.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/zatuvidujun.pdfIn PDF document text
    • http://annuaire-regional.com/ckfinder/userfiles/files/59462384530.pdfIn PDF document text
    • http://intproplaw.com/admin/uploads/file/9711710138.pdfIn PDF document text
    • https://miminku1.com/contents/files/wosaxubawe.pdfIn PDF document text
    • https://genia-groupe.fr/images/files/21931850759.pdfIn PDF document text
    • http://xn--80aap0abfiql8h.xn--p1ai/admin/ckfinder/userfiles/files/45778971139.pdfIn PDF document text
    • http://pitin-akutsu.com/js/upload/files/xemiponiferekivafifizugo.pdfIn PDF document text
    • https://kalyna.ua/sites/default/files/userfiles/file/lamonoxolotatonemaj.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/161504c2b8e2a2---bipogujimipelex.pdfIn PDF document text
    • http://ingfrimale.com/userfiles/files/ximid.pdfIn PDF document text
    • https://thebottombillion.com/business_school/uploads/file/fudivuwalobe.pdfIn PDF document text
    • http://castel.lu/userfiles/files/63465655169.pdfIn PDF document text
    • http://antoniolescio.net/userfiles/files/mesezarof.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_off0000b635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB635 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.