Malicious PDF — malware analysis report

Static analysis result for SHA-256 b170dee0e71853b7…

MALICIOUS

PDF

263.4 KB Created: 2022-05-29 04:13:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 666310f60757bb0c64372a0e130891f0 SHA-1: 28b311f94040deea7b1c2dcdf4ee0fab48d67258 SHA-256: b170dee0e71853b7b5eca6f12412c005b2b85ea62458c65530ebcf1b38d63ce8
104 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript and an external URI pointing to a suspicious URL, indicating a potential phishing or malware delivery attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript is likely used to download and execute a second-stage payload from the identified URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7309

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
  • 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://norin.co.za/XSRYdR1H?utm_term=kwikset+digital+lock+manual+2+pdf+download
    • https://sujexixapobitu.weebly.com/uploads/1/3/4/3/134328704/22571b78df6.pdf
    • https://przedszkolenisko.pl/userfiles/file/fejuza.pdf
    • http://thietbiotovn.com/Images_upload/files/goniger.pdf
    • https://banghenails.com/upload/file/23822024723.pdf
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16209e3476cfd3---45959908627.pdf
    • http://primesystem.kz/app/webroot/js/kcfinder/upload/files/pazesorudigefowow.pdf
    • https://zitudido.weebly.com/uploads/1/4/1/5/141559037/4455543.pdf
    • https://teroradibiz.weebly.com/uploads/1/3/4/6/134652159/97334bd8e398.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/162448ba25025f---14530562759.pdf
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161fcef49457d2---72022607379.pdf
    • https://wejekeviwam.weebly.com/uploads/1/3/4/3/134349932/fewos.pdf
    • https://rowenimurowa.weebly.com/uploads/1/3/4/5/134501525/vadete-fuvomifapixabu-fifeza.pdf
    • https://wusufenowodutis.weebly.com/uploads/1/4/1/3/141373124/xudelonamadafol_towelala_xuxesolusebanis.pdf
    • http://dc-d07302d779c4.chio-tian.com/upload/files/15947823034.pdf
    • https://polovetanofup.weebly.com/uploads/1/3/5/3/135330247/2460045.pdf
    • http://kbcsisa.com/upload/fckeditor/file/71968771028.pdf
    • https://www.veedik.net/assets/admin/kcfinder/upload/files/43911851597.pdf
    • https://bor-diing.com/upload/files/bilubeduzoxapejo.pdf
    • http://aedjtj.pretty-match.com/upload/files/tebosifegurilawavoram.pdf
    • https://aleksandarshoes.com/storage/files/45623364990.pdf
    • https://www.insideaccess.lk/assets/js/kcfinder/upload/files/wibuposiretogixave.pdf
    • https://ditaziretuviki.weebly.com/uploads/1/3/0/8/130874055/xusobenurilatunu.pdf
    • https://limazosit.weebly.com/uploads/1/3/1/3/131380555/f9775.pdf
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1628eb2df29ebe---pugujidase.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/162251ede22161---31345018005.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_off0003b08b.bin
dd03a01539853f9dee54e53fb38ab75b8ca01fb8d92e92fd473df7d9e2dd94c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B08B 11252 bytes
font_01_sfnt_off0003cad0.bin
c06f655dcbbfddbb28ad12018dc9faaffa1cb4acd8e6ab09783de31e9cfa0875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3CAD0 16868 bytes
font_02_sfnt_off0003f675.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F675 16792 bytes

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