Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b50306b8455000…

MALICIOUS

PDF

80.0 KB Created: 2021-09-17 07:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 0f3e8ec0dd12e388bd5a95fbacf64cc1 SHA-1: 75e4a9d58cc300b1400a559a3229374ad5d53e43 SHA-256: e0b50306b845500057bbc6ba62b4e3c7e2030ad25e058da6d1f2a040f9c48ddb
154 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, some pointing to raw IP addresses, indicating a malicious intent to redirect users to potentially harmful sites. The ML classifier and ClamAV detection strongly suggest this PDF is a phishing or malware distribution vehicle. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://oniceh.ru/uplcv?utm_term=intel+ipos+android PDF link annotation
    • http://wwm-quanta.com/upload/files/lewovedafevixika.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138d5d7eb636---37930796845.pdfIn PDF document text
    • http://140.121.125.49/ckfinder/userfiles/files/20210908_160710.pdfPDF link annotation
    • http://autoklej.pl/app/webroot/media/files/87490581999.pdfIn PDF document text
    • https://wangwangcamp.com/uploads/files/202109010434445424.pdfIn PDF document text
    • https://rcot.org/userfiles/file/wexolilokizuwuranab.pdfIn PDF document text
    • https://mr-alian.com/upload/ckfinder/files/70668191361.pdfIn PDF document text
    • https://benmoonpharma.com/userfiles/file/zizewib.pdfIn PDF document text
    • http://jmyhship.com/uploadfile/files/95221129185.pdfIn PDF document text
    • https://stomatoloska-ordinacija-rijeka.com/files/4655221621.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161403485e874e---51239611029.pdfIn PDF document text
    • http://topbondtape.com/uploadss/file/6558976388.pdfIn PDF document text
    • http://carshopm.com/js/upload/files/95277705344.pdfIn PDF document text
    • http://rimini-portal.de/bilderarchiv/file/50029137894.pdfIn PDF document text
    • http://rmgoals.com/userfiles/files/93368916316.pdfIn PDF document text
    • https://g55net.com/webpagebuilder/ckfinder/userfiles/files/sujubiditanoneneludo.pdfIn PDF document text
    • http://paulgraphics.paulsfashion.in/files/76685939901.pdfIn PDF document text
    • https://forexinc.ca/upload/editor/file/weviv.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/79399768100.pdfIn PDF document text
    • http://pieseclimaauto.com/files/file/17319898027.pdfIn PDF document text
    • https://kapokcmassage.com/uploads/files/202109031616157551.pdfIn PDF document text
    • http://historico.uts.edu.co/portal/app/ckfinder/userfiles/files/fodetifiwubesowebix.pdfIn PDF document text
    • https://deepex.hu/hirek/files/57196125000.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_off0000d554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD554 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ed6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6B 10336 bytes
SHA-256: 438d7c4cd1a354d4657c1ca0c46550107b010681a61ef9dd4ba7ca19a1fb94dc
font_02_sfnt_off000104d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D0 16788 bytes
SHA-256: b4cc9dd7ffd02a5c3d5823b1bb8d75fb97011e982a723f0115fc353bf3e63562