Malicious PDF — malware analysis report

Static analysis result for SHA-256 3102c0d6a9bd92ec…

MALICIOUS

PDF

72.3 KB Created: 2021-06-26 20:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5ce663e8765394f2e074db2618cfd9bf SHA-1: 7d0d69ab68f9bf6b3f7c85846ecb7c72cc6727e6 SHA-256: 3102c0d6a9bd92ec429b1df1894ec6b209927e6ea75b3361d56f539bac571ba3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to distribute further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. Although no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially leveraging JavaScript for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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 http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b3e7b231a---pafawojuwaludimekazixejig.pdf In PDF document text
    • http://agcslohian.com/userfiles/file/bopazusoparudelovo.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/xaziporejifixilaniz.pdfIn PDF document text
    • https://dnmpaint.com/sdcc/images/file/42680613035.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0cdb99926---muxowasazobefejox.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/bd4e2603ab6814d9f4ae1fbd837623d1/10437932007.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/9nj5n49tg9sja8l4e08dkc4os3/fipakivopegafudovizaf.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/gofiwo.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609f4ebf0c818---96140697739.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf5d7a0c8a---26718138391.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609029ae480b2---takopokedokowojasetexamux.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/uljek6iomb7omoqt0sfiaas7eo/nutuxisubekimel.pdfIn PDF document text
    • https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/f14a4b602fd01155ea1e77871e3dca5b/97434973529.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acbd1560791---wanodusixabirozinoviwume.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b599266e83---kazuxexekifudi.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/nodubavupanasuwemixukuni.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/1l6n04q2otagtg70c481rtdp53/zojerasufoxogexarusi.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/8956880455.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/c659712e1f2a6aa36c9a5a326ba615a8/36434534957.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/vrmp5s2tpnpg2uu6uqrk9r5q9n/57605007786.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ccb21a5f513---kuwijigosil.pdfIn PDF document text
    • https://khotelmarket.com/FileData/ckfinder/files/20210606_9AEF39FFCA550F63.pdfIn PDF document text
    • https://2acontractor.it/images/file/seravabowolab.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/863caf9acffd24c029590c6b83fb2260/pewinumixelirekax.pdfIn PDF document text
    • https://aashianarealty.com/file/33918974951.pdfIn PDF document text
    • http://imi.vc/upload/files/deditojogefirepamabek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=spc+manual+4th+edition+pdf+free+downloadPDF 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_off0000b9e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E3 15436 bytes
SHA-256: 35c31e43f7f91e5652a757beb3fb0cf2753145978c6898e1b89a20014a158788
font_01_sfnt_off0000e1b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B3 11056 bytes
SHA-256: 3dbefc4007a37573f802159c68881e103dea67a3ab47cdf2b05bff02e1301314
font_02_sfnt_off0000fb53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1