Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda1c1504b4da46d…

MALICIOUS

PDF

73.5 KB Created: 2021-09-12 08:58:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: dc734fe01c6786af861028cb6b284dd5 SHA-1: 1be09c1d4cddebce4bd5709a7f4d8b6af84f07ab SHA-256: eda1c1504b4da46d01193620a97008e99160c03f63529a43b3ffbe020e535af7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://crewmak.ru/uplcv?utm_term=how+to+know+if+someone+hack+your+phone PDF link annotation
    • https://pingthye.com/userfiles/files/2340358299.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138d286f2161---58937046723.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613219e550832---78521017701.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/84846847409.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139ccf616d2f---60246961078.pdfIn PDF document text
    • http://ippinnudon.com/uploads/files/piwilukekofevenarotituk.pdfIn PDF document text
    • http://franceplus.fr/userfiles/file/sidufaga.pdfIn PDF document text
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/9279154815.pdfIn PDF document text
    • https://angkaganjil.com/contents/files/80554220789.pdfIn PDF document text
    • http://kurier48.pl/files/userfiles/file/siwufaravar.pdfIn PDF document text
    • https://izometal.net/mm/file/96929249998.pdfIn PDF document text
    • http://shtaket46.ru/page_edit/_samples/userfiles/files/sumukibune.pdfIn PDF document text
    • https://larioenergy.net/uploads/file/duvizisusijenux.pdfIn PDF document text
    • http://purplebyanki-com.bvirani.com/ckfinder/userfiles/files/29608872831.pdfIn PDF document text
    • https://safecampus.in/cmsCart/upload/file/dunifusisavomo.pdfIn PDF document text
    • http://sibmaxi.ru/userfiles/file/xaxojigukibarus.pdfIn PDF document text
    • https://bda.ch/ckfinder/userfiles/files/dugese.pdfIn PDF document text
    • https://audit-advisers.com/userfiles/file/miwevevabidasosopakibis.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/muduxadapekitulofena.pdfIn PDF document text
    • https://standsimulator.com/ckfinder/userfiles/files/tusepekilimoxanapo.pdfIn PDF document text
    • http://tobn56.com/UpFiles/file/71224462142.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/e3f674548d5edd3fe12afed3a9809005/64417951204.pdfIn PDF document text
    • https://alpinashop.rudy-ra.com/files/5227596773.pdfIn PDF document text
    • http://www.mamafoundation.cz/ckfinder/userfiles/files/38925102904.pdfIn PDF document text
    • http://ecoaga.com/documentos/file/vasibiwizutewe.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_off0000bfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE6 11084 bytes
SHA-256: 1eb0e8900f0b74ae9cf1cd985a2bd909d60bbdae023bb6e5417693a66beb37d4
font_01_sfnt_off0000d9a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B4 15304 bytes
SHA-256: 786b83d1ac3a149e9e552a2cf5a96362057318284a1785b033e3f8e21583eba9

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