Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0642a17859f56f…

MALICIOUS

PDF

98.5 KB Created: 2021-06-26 17:05:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 67fe32969453354457a6d0e88ff783e6 SHA-1: 2f14e22cda8f01aae3742c599fedb7cd32b5b492 SHA-256: 9d0642a17859f56f1fc6ac26075fc2f127b3971df8da30e60785a650f2490e6b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to compromised WordPress sites and disposable hosting. The ClamAV detection and ML classifier indicate a high likelihood of malicious intent, specifically phishing or malware distribution. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of suspicious links suggests an attempt to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9784

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed7646d37a---318414017.pdf In PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/3f002d0f4823272a5e8b55ed917c32ae/26447238188.pdfIn PDF document text
    • https://samowar.ch/upload/file/44768199986.pdfIn PDF document text
    • http://bocghebinhduong.com/media/ftp/file/33323664492.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/0815d6f900017b15c8ddb942c6ae6a65/gupep.pdfIn PDF document text
    • http://www.reenactmentmarket.eu/images/wyswig_images/file/difexasafoja.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/sisupopevixineliwu.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/28855261160.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a829446e896---povetaluvojapegifafe.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861d75b19a9---sovuwoturawewirusulusumil.pdfIn PDF document text
    • http://mg001.cn/upload_fck/file/2021-6-5/20210605110953770664.pdfIn PDF document text
    • http://strategie-online.net/catalogue_dynamique/file/folorejajesujilibogado.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/3pgid3cu2cm4nn3ak711220ai9/68178267519.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/83fc9338b9cec26a5dad780289d103bf/rebowepekumaxokubanekan.pdfIn PDF document text
    • http://jedwines.com/cmsCart//upload/file/73062353822.pdfIn PDF document text
    • http://alexandersorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/43788917510.pdfIn PDF document text
    • https://whitesal.com/data/images/file/8750_20210603164436.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086125483e12---36712851831.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/zibupoxopevaletomorerov.pdfIn PDF document text
    • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/18891056413.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/kodaworazoled.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/071ba6f579f16a85ca1e273d4d7db59a/53610599308.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/84755201938.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae24b50a13---59897517665.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b5bb054f5dd---9865581210.pdfIn PDF document text
    • http://prociweb.hu/sites/files/file/98179468947.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/7b53c19cb70d7c06fbfd5dada9e221d7/zadanebogiligalubuvokifu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=proof+like+toy+soldiersPDF 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_off00011d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D15 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13527 18840 bytes
SHA-256: da387d6af959dcb4a37822959a2dd26cc7495cade9aa1b0908999256b716d432
font_02_sfnt_off0001654e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1654E 10288 bytes
SHA-256: f0a9a1b3e184c169652daa6b933f08727ccbe2d1db4309f6bbb76216aa3a567b

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