Malicious PDF — malware analysis report

Static analysis result for SHA-256 059fdf08393d00c3…

MALICIOUS

PDF

87.4 KB Created: 2021-09-16 22:36:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 5ec4a79bf8a31f2dd8c49a36cd554cf0 SHA-1: 776b94e92cc28abb3af522d0a73e399bce484b75 SHA-256: 059fdf08393d00c3167181b0e53e7c4d95ab742180c293f859597f17b504bcc3
196 Risk Score

Malware Insights

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

The PDF document employs a social-engineering lure, instructing the user to install a browser extension or update, which is a common tactic for credential theft or malware delivery. The presence of numerous external URLs, many hosted on compromised WordPress sites or disposable domains, further supports a malicious intent. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://wastran.ru/uplcv?utm_term=iphone+backup+to+android+phone PDF link annotation
    • http://worldofpacifiers.com/editor_uploads/system/files/45664372966.pdfIn PDF document text
    • https://cafesca.mx/ckfinder/userfiles/files/53717365979.pdfIn PDF document text
    • http://westernmaki.com/uploads/files/38567968301.pdfIn PDF document text
    • http://shriadinathbank.com/uploads/23636990353.pdfIn PDF document text
    • http://ljjxmining.com/uploadfile/file///2021090522075487.pdfIn PDF document text
    • http://voyagevietnamlaos.com/hinhanh/file/kojavefivazalotonefivi.pdfIn PDF document text
    • http://hasicimosnov.cz/foto/Image/file/gamapapetafiwanerutero.pdfIn PDF document text
    • http://songhakbbq.com/uploads/files/23735973168.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/35qj33norkcetrl3qaa3d4kvm5/33130084839.pdfIn PDF document text
    • http://ketnoikienthuc.com/upload/files/24397007946.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/0aea7b8ad2f30cf348cf331449c5635d/47544179808.pdfIn PDF document text
    • https://codecs.ro/images/file/59189434102.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613b325deb31e---wemazin.pdfIn PDF document text
    • http://knx-shop.ru/admin/ckfinder/userfiles/files/dunur.pdfIn PDF document text
    • http://njbeihang.com/uploadfile/file///2021090223052320.pdfIn PDF document text
    • http://sgrdinstitutionspandher.org/sgrd/userfiles/file/68302677294.pdfIn PDF document text
    • http://www.primariasantana.ro/uploads/file/tajosaxojuxoxaxivumemutoz.pdfIn PDF document text
    • http://getampedmag.com/ckfinder/userfiles/files/sewesunosa.pdfIn PDF document text
    • http://serting.eu/userfiles/files/8042519359.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/15395011625.pdfIn PDF document text
    • http://rococosofa.com/files/files/pofeviziginajogovixaz.pdfIn PDF document text
    • https://soechi.id/userfiles/file/wolixokorixotexise.pdfIn PDF document text
    • https://organicfertilizerproduction.com/d/files/5622628211.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/o05vs6cvqbb82leu9a7plrv41s/24716507121.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_off0000f315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF315 16932 bytes
SHA-256: 972155bceb30d8c95d0f304665a357ba66b6fd62694c39150283ee226efff637
font_01_sfnt_off00011f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F51 10680 bytes
SHA-256: dcfe7f6f06afaec404b63981b6b5d31ac65079c2867857dcd701af445bca7330
font_02_sfnt_off00013783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13783 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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