Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc6569861ce35a4…

MALICIOUS

PDF

73.7 KB Created: 2021-09-14 00:45:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 39cd5badd82b1c2df8ce7564fa22a29a SHA-1: 3fc3b782b508f8eae2916c6dbb42ae9505cb9037 SHA-256: 5fc6569861ce35a40e765dbf589a0025e0df95347f6091cab2d8d88d918f050f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS upload storage or are part of a link farm on disposable hosting. The embedded JavaScript likely facilitates the redirection to malicious websites, contributing to a phishing or malware distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://philabc.ru/uplcv?utm_term=rupaul%27s+drag+race+all+stars+season+2+watch+online PDF link annotation
    • http://4x4autok.hu/userfiles/files/70527361830.pdfIn PDF document text
    • http://pi-consulting.ch/download/mosarobif.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/92e82c92bb194b10e10d97d0e7b6e5b2/56187286502.pdfIn PDF document text
    • http://stroi-sistema.ru/img/rogimipevaxukukevotavotu.pdfIn PDF document text
    • http://garmaclima.com/uploads/ckfinder/files/48845748052.pdfIn PDF document text
    • https://ilexgold.com/app/webroot/files/userfiles/files/42177039763.pdfIn PDF document text
    • http://tetrafluoro.com/upload/files/nuzinavadelikekunasubu.pdfIn PDF document text
    • http://simpelms.nl/userfiles/files/32776541168.pdfIn PDF document text
    • https://mytekas.com/UserFiles/file/8573407666.pdfIn PDF document text
    • http://fazendasaojudastadeu.net/fotosempresa/files/11803095439.pdfIn PDF document text
    • http://docando.es/js/ckfinder/userfiles/files/dupebadujoxaji.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/5ade7c7d30542c4128c74e84dc7eb8b2/32265109467.pdfIn PDF document text
    • http://mercuresamuichaweng.com/admin/file/nemobogabisorekij.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613338fc34b15---wopawirovosudirukuwi.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/v36ur52u5liii79rt8j5bp9lgv/xefuxexuzikevubagewut.pdfIn PDF document text
    • https://canoe.ro/Extras/ckfinder/userfiles/files/7678759624.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/up8um3haqvgqunpvrsl53uv3u2/xodupoguliwuwojawirawija.pdfIn PDF document text
    • http://ksiclubbiz.ksiclub.org/svnprojects/DHD/Source/images/files/37831538374.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb3f63589f---35126247816.pdfIn PDF document text
    • https://satbietthu.com/luutru/files/17890541799.pdfIn PDF document text
    • http://mixmarketing.vn/upload/fck/file/sunidunena.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/lukise.pdfIn PDF document text
    • https://e-room.co/userfiles/file/zokanovuvukumikovur.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132e8f61c133---zolafikuvelividazovu.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f8c97ed4c1---89595821427.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_off0000baaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAAF 11176 bytes
SHA-256: ea6efa35921c0ab2a35a73f9ae7cbebb12f7ab22a15627b4bb28f09a48f495c2
font_01_sfnt_off0000d4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B3 17012 bytes
SHA-256: fa98e6a7dabcbef945d924f2580ed8bb962e27a81676f429bbcd20e6adbc89fa
font_02_sfnt_off000100c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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