Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d85fdaff197f557…

MALICIOUS

PDF

81.2 KB Created: 2021-09-16 14:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0b4666906a09c4141225c8a08ef8c4c9 SHA-1: a196053bb57ce1600956e6a92c1e0dc990713696 SHA-256: 0d85fdaff197f5575315b2eb87f875f8a2d87ffec2600d012febe53c2bc1ca16
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. The heuristic firings indicate that the sample attempts to redirect users to external IP addresses, specifically highlighting a link to an IP address literal. This suggests the PDF is designed to lure users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://mobil-tech.com/files/44690679974.pdf In PDF document text
    • http://e68momo.com/shopadmin/upload/files/92042630523.pdfIn PDF document text
    • http://uniontsg96.ru/admin/ckfinder/userfiles/files/wajigutimup.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/vunekimemi.pdfPDF link annotation
    • http://makeyourpartnermelt.com/userfiles/file/3840844854.pdfIn PDF document text
    • https://wilocom.ro/ckfinder/userfiles/files/xujesumuwimezuzevib.pdfIn PDF document text
    • http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/26676445975.pdfIn PDF document text
    • http://goodlack.cz/userfiles/file/gaxusidemoretute.pdfIn PDF document text
    • http://shiny-baby.com/fileimage/file/valapomexakekekedojirijo.pdfIn PDF document text
    • https://h1t-url12shio-turbo.com/contents/files/69513381156.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/jelitizedalakipolovomon.pdfIn PDF document text
    • https://segurodegranizo.ar/noticias/fckeditor/file/93959393143.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/5922491468.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f02f1c518d---zojukiwexodupe.pdfIn PDF document text
    • https://yam-token.com/business_school/uploads/file/59963256951.pdfIn PDF document text
    • http://eventologia.com/userfiles/files/bubekanowufamu.pdfIn PDF document text
    • http://mgtuae.com/uploads/file/60347796792.pdfIn PDF document text
    • http://boatmonies.com/uploads/files/12312456165.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/minenixaxe.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/161324b672bd1e---wasajelonajomadawosifanas.pdfIn PDF document text
    • http://spostojow.pl/userfiles/file/90463584697.pdfIn PDF document text
    • http://auburn-companies.com/userfiles/files/79052060885.pdfIn PDF document text
    • https://mptradingcompany.com/userfiles/file/lizubukituwodijinawugabo.pdfIn PDF document text
    • http://portakalweb.net/home/portakal/public_html/ckfinder/userfiles/files/56351776041.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=watch+tennis+onlinePDF link annotation
    • 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_off0000d96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD96D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f17f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17F 18060 bytes
SHA-256: 08361f90d497a208532bb5384ba2099f1fbff478614e01ba6f5d7926d42e9a6d
font_02_sfnt_off00012064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12064 10220 bytes
SHA-256: 34802bdf4d90183e7feefc4fa2a816ee0ae5f7bd549c977d8c3d91b705a70862