Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa1cb3402656b03…

MALICIOUS

PDF

107.3 KB Created: 2021-08-22 00:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 6546617700ed84d865cc48d2cad339fc SHA-1: 15cc7777277f52bc29429f4091b4b5fd78c06627 SHA-256: 6fa1cb3402656b03af8a6817a2375fd00dd656757c60978b001c38d3469fdf8d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised WordPress uploads and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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 https://garglob.ru/uplcv?utm_term=farkl%C4%B1la%C5%9Fma+ve+organogenez PDF link annotation
    • https://arvikabc.com/images/uploadedimages/file/wojufaxoleworitiw.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/896f7f8c7a7d350e19247d08da5a03bc/tugewagiwizimipugixo.pdfIn PDF document text
    • http://plncse.hu/php_data/file/todikepekewopojoviroriv.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ede3eb64a6a---85180947875.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ce9dc1c4088---24724079277.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/df4792ad3eefc63c6e2de96d46e9679c/57709566739.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a0dbe47aa0f---virofejiwojesubutirasevob.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/f4603aea7df963220ad11690885998ed/19685097595.pdfIn PDF document text
    • http://louisamerino.com/userfiles/file/3173582011.pdfIn PDF document text
    • http://pro-group.ru/userfiles/files/fedofuwafajinaranud.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/29851395977.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a136d5ae8a4---ladamevez.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2522658de---givomavonoja.pdfIn PDF document text
    • http://playbabydoll.com/userfiles/file/lilujemigazete.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1610bb7a9d8b45---vogaman.pdfIn PDF document text
    • http://www.morrisjones.co.uk/EditorImages/file/levuxusajep.pdfIn PDF document text
    • https://bwawarszawa.pl/upload/file/nisojimekomaw.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/bujutokajakuzemonanuw.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/9m17u1idfp327oqj9tniajis2m/tomegudofelomiminibikun.pdfIn PDF document text
    • https://rcvizovice.cz/ckfinder/userfiles/files/belipujemew.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/1453581627829455455b7bc08e6720c9/1531111485.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/zetegixa.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/denegexo.pdfIn PDF document text
    • http://premiercontractinginc.com/files/file/tifipipomexedefade.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7174a84af2---31847239056.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_off00013de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DE4 19420 bytes
SHA-256: 479d7e0ea3ee2ad13bb8442ba6b723d6790b7532663759490015ca1a20b25e34
font_01_sfnt_off00016d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D58 10576 bytes
SHA-256: 73e93b1553e5c7dd5272eea6b50ed10d50b5a8f0d96942693863fcf362572481
font_02_sfnt_off00018573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18573 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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