Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c6e30624d745c3…

MALICIOUS

PDF

69.5 KB Created: 2021-09-24 16:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 9df243fa94c75381d851eaba0ad21a06 SHA-1: 7d06a88cc361591f1b71b7266ac32bfd19e34172 SHA-256: 82c6e30624d745c3255e0d358f482a232e6d541d2af3e18e26c223aa13a336c1
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many of which point to disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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=it+full+movie+online+123movies PDF link annotation
    • http://cabanagarden.hu/editor_up/zusozuxusumoval.pdfIn PDF document text
    • http://ventiliatoriai.lt/js/ckfinder/userfiles/files/27154637736.pdfIn PDF document text
    • https://architektor.ru/uploads/file/27047462907.pdfIn PDF document text
    • https://eetravel.net/file/59560164338.pdfIn PDF document text
    • https://huuphongplastic.vn/uploads/images/files/39107709257.pdfIn PDF document text
    • https://groupunsur3.com/contents/files/91824758386.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/tofonibubafakadizowesad.pdfIn PDF document text
    • http://luxlustry.ru/img/upload/3360506012.pdfIn PDF document text
    • http://s-privod.ru/userfiles/file/38133988614.pdfIn PDF document text
    • https://fetogram.com/images/upload/files/genugadosagudelevo.pdfIn PDF document text
    • http://andrenickels.de/ckfinder/userfiles/files/59453387379.pdfIn PDF document text
    • http://leeharringtonhomes.com/userfiles/file/batewepozizewadilaxogivuz.pdfIn PDF document text
    • http://cameradungphat.com/uploads/files/tiwejokinegejav.pdfIn PDF document text
    • http://kompassztuki.pl/Image/files/vagixidasimogazomerus.pdfIn PDF document text
    • https://ichapps.com/ichapps/ckeditor-ckfinder-integration/uploads/files/pidizavonudeberekunakexe.pdfIn PDF document text
    • http://xmzhj.com/UserFiles/file/65577278164.pdfIn PDF document text
    • https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/gemukogagolole.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16147880a21ab9---nilerovuwob.pdfIn PDF document text
    • http://noithatmyhome.com/img/files/bavedan.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b50f2d2ff6---zokosixipirubedir.pdfIn PDF document text
    • https://torgradio.ru/new/files/file/viwawipifuvadenudozate.pdfIn PDF document text
    • https://vatlieutaphu.com/upload/files/17420328781.pdfIn PDF document text
    • http://rbc-bezorgdiensten.nl/upload/zigitadafiwu.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_off0000aeb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C6 16292 bytes
SHA-256: 2669ef6e72e5b00dfae3a2f1f71bf1acfdfcbeb3b304b795927e9fc991f2f2c4
font_02_sfnt_off0000f011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF011 10572 bytes
SHA-256: d97d7c83b7e52234d5764dbcb3fddc156252f0eac41419b082faeb6c83191549

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