Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe54334d60af5ce6…

MALICIOUS

PDF

87.7 KB Created: 2021-07-18 13:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 707ff41868cc9ae860aae95e215de571 SHA-1: 457b34821b85fce6ff10c1c6e3834ed0a729b1ed SHA-256: fe54334d60af5ce6ac1ba629970c485f67c24a17bc4392eb608c769d26274a21
156 Risk Score

Malware Insights

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

The PDF contains a large number of external URIs and link farms, many hosted on compromised or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is unreadable, but the heuristics point to a link farm designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://ahcxdq.com/uploads/file/072359519408.pdf In PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a356fe6fab9---safev.pdfIn PDF document text
    • http://coyada.com/up_images/up_images/kufenadegovop.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/gafemutume.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/875495233.pdfIn PDF document text
    • http://omak1968.com/clients/71178/File/lararesesu.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/ji9orkrda0jf40j3u5chanuct0/57012143072.pdfIn PDF document text
    • https://vanvoorst.info/uploaded/file/vonizovojorofokinim.pdfIn PDF document text
    • http://ceomit.com/fckupload/file/13579791577.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/duamgcsoc2o0vcv7dm4ucvsjhb/raguxelibifidiletadoj.pdfIn PDF document text
    • http://appletechsolutions.com/userfiles/file/71522120904.pdfIn PDF document text
    • https://fallsplat.se/file/64425434247.pdfIn PDF document text
    • https://itracmediav5.com/ckfinder/userfiles/files/88604124421.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/kjfjn4at7v0p7lihkcpoiion8h/41581369871.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/41qgmqbfae00f4khna86v7onlt/puresoz.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/4fd3a775bf9a8ee60b0c8af5215f22a2/mezavarotegujiwunul.pdfIn PDF document text
    • http://artkulinaria.pl/sites/default/files/file/84949834348.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/66a92f9d1f7441ec25f88913358f1cd6/dajafevebi.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/ju4jt2jtc1q2eqdts83mamvm7m/fepan.pdfIn PDF document text
    • http://dafangtour.com/fckeditor/userimages/file/pefotigigipojo.pdfIn PDF document text
    • http://marketypik.pl/zdjecia/fck/file/geritogekabusewefexe.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/96b6c5a185fd2d830ba250bdcc81c7cb/lodopes.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=how+to+hack+someones+brawl+stars+accountPDF 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_off0000f277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF277 17520 bytes
SHA-256: 77e432f9aaf3024a6b0d9a36eeac5d21d2185fe9a7d92e0e871f10c5ba469661
font_01_sfnt_off0001209e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1209E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000138b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138B5 10812 bytes
SHA-256: 46f6fe26ba1efa9d66a0d513221b071f1d5252f9b60ca98970e6a7e3541060fa

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