Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5686d2621882b9…

MALICIOUS

PDF

79.4 KB Created: 2021-09-20 00:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: ebc3014b14fa4cce3b3fd97c36fa9062 SHA-1: 69a0ee334e681a41e7e8b14773cb70a8dea54719 SHA-256: ce5686d2621882b9f0cc75ae354c7a58e49f6584ec9ec588da402fc3daf94a2e
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and numerous external URIs pointing to disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded JavaScript indicates an attempt to execute code within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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://allytemp.ru/uplcv?utm_term=vikings+war+of+clans+cheats PDF link annotation
    • http://tekizolasyon.com/ckfinder/userfiles/files/gunozamakilufox.pdfIn PDF document text
    • http://tageedesign.com/ssmpt/documents/file/toligavifefesokajuwesewo.pdfIn PDF document text
    • http://skpizzasubs.com/uploads/files/venaj.pdfIn PDF document text
    • http://scarpatti.com/files/46099314077.pdfIn PDF document text
    • https://istanajp.net/contents/files/99298859423.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/waziri.pdfIn PDF document text
    • http://e68momo.com/shopadmin/upload/files/59398723241.pdfIn PDF document text
    • http://www.og2c.com/images/file/89139621173.pdfIn PDF document text
    • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/tubazezujora.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/161382e0ede2a1---11781576350.pdfIn PDF document text
    • http://area100impianti.it/userfiles/files/vivixixojizulowitokogiku.pdfIn PDF document text
    • https://karolinanowak.com/userfiles/file/44196662322.pdfIn PDF document text
    • https://reklama71.ru/upload_picture/28658271709.pdfIn PDF document text
    • http://secureyun.cn/uploadfile/file///2021090407595166.pdfIn PDF document text
    • https://bacninhonline.com/webroot/img/files/gewesutikazuladodeb.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/lapave.pdfIn PDF document text
    • http://aescantabria.es/upload/fckeditor/file///89165646144.pdfIn PDF document text
    • https://saatyapi.com/upload/ckfinder/files/90748489726.pdfIn PDF document text
    • http://4bx.pl/public/file/jimosom.pdfIn PDF document text
    • http://tano-cable.com/d/files/misiridovujojekunin.pdfIn PDF document text
    • http://czechnews.cz/userfiles/files/75538723780.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/96776636831.pdfIn PDF document text
    • http://ibnuaffan.com/ckfinder/userfiles/files/jixijeko.pdfIn PDF document text
    • http://abbwingslynnhaven.com/uploads/files/22141822979.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD264 10764 bytes
SHA-256: 3bd5e32fa2a16156874eb5acffccf376d32a2d88de837d92014ee01053381116
font_01_sfnt_off0000eb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10347 17192 bytes
SHA-256: a953d3b144e1636ca2db6fe66871f537127bec688edd6d9d7ec036d2030417df

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