Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb2e681f8eefef9…

MALICIOUS

PDF

81.2 KB Created: 2021-09-11 23:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 87110c5b764aa249a2439c70f5614d7d SHA-1: 0496016a0d4c74bf16baf08b5b666ff187216f44 SHA-256: aeb2e681f8eefef9d3fb5e6e5c34192d070eeb5634249467845b00e29b49bb0c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is often used to redirect users to malicious websites. The heuristics indicate the document functions as a link farm, with numerous URLs pointing to potentially compromised or disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://timandlor.com/userfiles/file/jedum.pdf In PDF document text
    • http://skazka76.ru/pic/userfile/57572967696.pdfIn PDF document text
    • http://polipack.ru/content/file/49013049754.pdfIn PDF document text
    • https://y3stwk65l-mn9.com/contents/files/sapagupuwaluli.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16138c487a6e98---30288726901.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/7388278405.pdfIn PDF document text
    • http://uniquecharacters.com/upload/files/vogozunanagijaladejo.pdfIn PDF document text
    • http://tnetimes.kr/upload/file///sewelekenekanefowujo.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161351e8551e59---nurotu.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/zurudanaxekidi.pdfIn PDF document text
    • https://wcfkenzi.com/ckfinder/userfiles/files/95667764258.pdfIn PDF document text
    • https://miguktour.com/FileData/ckfinder/files/20210901_C32A720D420C8A3F.pdfIn PDF document text
    • http://langmoon.jp/js/upload/files/fevabot.pdfIn PDF document text
    • http://rehahomecare.com/upload/editor/files/raruvafajipukamudo.pdfIn PDF document text
    • http://k12kos.com/ckfinder/userfiles/files/dekitesozalogefupezepaz.pdfIn PDF document text
    • http://escalierdurire.fr/ckfinder/userfiles/files/zitidubalujal.pdfIn PDF document text
    • https://www.theoakshealthcare.com/my_content/js/ckfinder/userfiles/files/17328994744.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/c2841db1a8081c1f97cae9922042bae6/52775706720.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/lelexaviwidozowimix.pdfIn PDF document text
    • http://malbreil.com/userfiles/file/xojaviniponobuvewode.pdfIn PDF document text
    • https://noddy.nu/images/file/sowojolidanuvewedewomoluz.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/72052372133.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16130db5f498c7---rafujekitukewapumilano.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=can+i+see+who+watched+my+instagram+profilePDF 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_off0000d898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD898 17252 bytes
SHA-256: 11ded2bb9b10188a3ab617abf33d7d119dc955d7d6488400d22fb0c933283bef
font_01_sfnt_off000104a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A8 11296 bytes
SHA-256: f74fe8ed0221a7b4595d730bfb86ebd6b3d816f2e19a26e3900d46d134d4840c
font_02_sfnt_off00011ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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