Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0edd6dbae427816…

MALICIOUS

PDF

77.2 KB Created: 2021-09-26 18:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 6194ca15c38a82ee17e2c471f7f2b2a7 SHA-1: 05830d10ba264365d7c2ccde59c41a5e2872c8bc SHA-256: f0edd6dbae427816d95993096260c4621a0b13c07e0eafeb69273eb6bea1c74e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites. The presence of numerous embedded URLs, many pointing to suspicious domains, supports the conclusion that this document is designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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.
  • 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://evolutionchonburi.com/userfiles/files/35979216000.pdf In PDF document text
    • https://ntc-container.com/upload/files/nejizikonafowaxefid.pdfIn PDF document text
    • https://beauty-full.ru/uploads/files/78551668830.pdfIn PDF document text
    • https://rosedreamholidayhomes.com/ckfinder/userfiles/files/21423576701.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3437bc119---tadowogedobaxe.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/file/kovix.pdfIn PDF document text
    • https://togelunited4d.com/contents/files/nosivefapupez.pdfIn PDF document text
    • http://sictombbi.fr/ckfinder/userfiles/files/64062001354.pdfIn PDF document text
    • http://letdentalab.com/img/files/jodemilimibupixo.pdfIn PDF document text
    • https://remini.hu/userfiles/file/77296636253.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614893c5e3977---siloporedat.pdfIn PDF document text
    • https://riolisboa.com/images/ul_files/file/JBSVds4anrf5.pdfIn PDF document text
    • http://linuxnewyork.com/draft/media/suxuvutamilafupo.pdfIn PDF document text
    • https://brihat-group.com/assets/userfiles/files/futipowifafitigog.pdfIn PDF document text
    • https://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/82795932183.pdfIn PDF document text
    • http://duet-czluchow.pl/userfiles/file/85295765127.pdfIn PDF document text
    • http://tubelessons.net/cms_images/file/79201925294.pdfIn PDF document text
    • https://lekkermooi.nl/userfiles/file/28813379513.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/1eec9a2767548964e12679ced39e101b/88241353232.pdfIn PDF document text
    • https://wittnebel.dk/file/35405261770.pdfIn PDF document text
    • https://www.ocnistudio.cz/ckfinder/userfiles/files/65050062741.pdfIn PDF document text
    • https://cargobull.cz/res/file/vufejonixuzagidipokapasik.pdfIn PDF document text
    • https://serihosting.com/calisma2/files/uploads/29804243920.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=learn+c%23+for+unity+pdfPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2E5 18400 bytes
SHA-256: b695b6b0a63f9ac11c827a27e66d545afe3108dc6e76181a14945fa9bce7f0d5
font_01_sfnt_off0000e261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE261 9656 bytes
SHA-256: 8f25590c14908cafc2a8684733e5ebf05524e1448dda67b0ce1fb2e674d49421
font_02_sfnt_off0000f765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF765 16232 bytes
SHA-256: 01cd0e4798e93fb086042d610f43ddeed7bf091af48aa863f5c4a4f61b651684
font_03_sfnt_off00010d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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