Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9a6fd95bfde794…

MALICIOUS

PDF

82.0 KB Created: 2021-06-19 06:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8bde0eed950c2f608d4e624d209c4c49 SHA-1: 6f7d6240f108692c6ee2c7b3249ca2cb963b8595 SHA-256: ee9a6fd95bfde794c1ea59bf2577d1b6b14f21e7f6a4d6bd92a9755fe3481ebf
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains a link farm pointing to multiple disposable domains, with one URL specifically mentioning 'roblox executor android', suggesting a social engineering attempt to trick users into downloading malware. The presence of numerous external URIs and a high ML classifier score further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://flagrant-desir.com/userfiles/file/99259949466.pdf In PDF document text
    • https://zoldlepes.hu/userfiles/file/68262086561.pdfIn PDF document text
    • http://eaas-journal.org/survey/userfiles/files/22879228085.pdfIn PDF document text
    • http://aldara-latinoamerica.com/userfiles/file/96440824912.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/ol3lkjp3vpv7g417kilpke6ttc/xagodazezileroza.pdfIn PDF document text
    • https://nadamasristorante.it/file/moxigulirizosapol.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b21dbded6d4---79286683128.pdfIn PDF document text
    • http://basaritarim.net/admin/editor_resim/file/55932034261.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c39638c18f4---raxolovelaguboditadifupeg.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c71e618d3---bowisomadirixurun.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0491cd2c1e---zadiziwakivagafumexini.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/kkpkl8l2ohdcic5t7fbmneadpb/razedamit.pdfIn PDF document text
    • http://on-video.com/movies/movie_data/file/66753314783.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/fijugomafaluwitorebe.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/9e54eda5da64622b2df6b92d231e25c8/62626447417.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/dqt3aga1hl8gvoa82enb9b1cc0/gevukixunotafivuvelat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=roblox+executor+androidPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10497 4968 bytes
SHA-256: 1eb5ed84de9ab198647b8ef15179902295473cc458e77bf9c31c514a6c125b55
font_01_sfnt_off00011593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11593 11132 bytes
SHA-256: 957e4d1916fe0ffe5228e2fab5b8815c18e0ceb356edf8801ea6fc0ebb0f9782

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