Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed7f3c6ce495117…

MALICIOUS

PDF

80.4 KB Created: 2021-09-16 09:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 138113ca0a55ce02625a9fdfb3e92a3a SHA-1: 08a21a810d22e715bf9e9b31a4c04943f1efc6ca SHA-256: 2ed7f3c6ce4951176ee9852bd30d1e2bfc4ff2a9d469c317bf48cdff727970f5
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains embedded JavaScript and numerous external URIs, suggesting it's designed to redirect users to potentially malicious websites. The presence of embedded JavaScript indicates an attempt to execute code, likely to facilitate further compromise or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 6

  • 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
  • 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://nomylo.ru/uplcv?utm_term=alexa+on+windows+app
    • http://isvpro.com/custom/files/sagama.pdf
    • https://kompaspt2.com/contents/files/zafiwexi.pdf
    • http://k-ookuma.com/js/upload/files/gepor.pdf
    • http://xn--12cm8caae5d9a0a0a1dxk6dd.com/user_img/files/tupozara.pdf
    • http://agriturismolataggiasca.eu/userfiles/files/siviki.pdf
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16137e4a794543---29668174239.pdf
    • http://wingmanplanningdemo.com/userfiles/files/nuzovudivovubi.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dcf71a5f42---turavem.pdf
    • https://jin-ji.com/upload/files/65173611212.pdf
    • https://pepsima.biz/files/file/nesewozogefisesavajajawez.pdf
    • http://sanalights.com/admin/admin/uploadfiles/file/wivowaditilejope.pdf
    • http://faithleader.org/js/ckfinder/userfiles/files/16361729039.pdf
    • http://nano-vip.com/ckfinder/userfiles/files/7407398988.pdf
    • https://davidfoleyinc.com/userfiles/file/sejudurosexegutiz.pdf
    • http://karthikeyanjayaram.in/userfiles/file/zuxakiniwiwalanaxu.pdf
    • http://scuderia512.com/js/upload/files/zivivaxedid.pdf
    • https://bruceleevideos.org/images/file/97861850404.pdf
    • http://reliancefla.com/admin/images/file/tifawunog.pdf
    • https://sjamsul-hidajat.id/ck_uploads/uploads/files/xogan.pdf
    • https://ahl2005.com/ckfinder/userfiles/files/69826952936.pdf
    • http://warmistore.com/userfiles/file/xukesamulotimu.pdf
    • http://gtlfuelmarine.com/userfiles/file/tanatuwedukojivusumis.pdf
    • https://designclarf.it/file/potafozanasujabuzixuze.pdf
    • http://arablift.net/userfiles/file/25354647341.pdf
    • http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/97585313115.pdf
    • https://bawaniint.com/ckfinder/userfiles/files/29845947388.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7f5.bin
6c06b9be2ab366f7d339a14e5c7999b445f49345d397d11f9ce5da8ece5137c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F5 10356 bytes
font_01_sfnt_off0000ef80.bin
b86871de7dddf0a71589b85e6accd666ad79337c02bfa17fdd8a6efe1fcc67e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF80 17208 bytes
font_02_sfnt_off00011bee.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BEE 16792 bytes

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