Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc802004e2d13f22…

MALICIOUS

PDF

120.1 KB Created: 2021-06-26 03:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a9142e1447b4213da2e8497c28500bcf SHA-1: 984d6a52f5face09344add8b16a0394591b1a3b8 SHA-256: dc802004e2d13f222e37d83c8e3426874fd855ec1df6b74821157a7becb9f521
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised WordPress sites. The presence of numerous links and the use of disposable hosting suggest an attempt to distribute malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9939

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nakatka.com/files/file/44851537732.pdf In PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a118c21b537---67338904837.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/zagurelapumadirakumudubib.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/5b2068c4370105f19f49d3d0e9936c72/20903610275.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a15592e6ecc---82744300261.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083dc1ed3db2---74637699693.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f450f48e55---zilanujafezibajumise.pdfIn PDF document text
    • https://sce.tw/uploads/files/60bfd6757b5cc.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607b756e5361a---zifovafefovugujuxasesimu.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d929ec8a5---9180661390.pdfIn PDF document text
    • http://stjconsulting.it/userfiles/files/tanimepofanutama.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/6jin9pb4fmc1tljjpe43t46ag4/18978286073.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/4aqgclcv9uu9v1ik10vipo64ot/nejadopusokedaxofipa.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/90262238080.pdfIn PDF document text
    • https://khabul.mn/mmpa/userfiles/files/jetane.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/vefomolupazuxazifox.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/35658f130e094cd850ab6ffcd89040bd/5512123957.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/matpgujag6qesnaqejja4uh8h8/xikavodutojaz.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce20e537f7d---zugixujexutojubelusiw.pdfIn PDF document text
    • http://kurier48.pl/files/userfiles/file/41273742362.pdfIn PDF document text
    • http://usarsenal.it/userfiles/files/61568770465.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/eeba53e9ececec22b1424132b6263724/kigenotatatafo.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/47231521971.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/1sqh7tsmse8b49u7cag5b59oqp/ridarofugefunipu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=rise+of+empires+for+windows+10PDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C48 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001745f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1745F 10660 bytes
SHA-256: 01f0d6862214d8bf07a8bd003246b29a0ef2f9f9f45b27966cab94220e164258
font_02_sfnt_off00018cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CC9 16208 bytes
SHA-256: 4602efdc27effd6d0b9796dd62a14020f6514d216ceac1da6ee579af8a0da4e5
font_03_sfnt_off0001a28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A28A 18040 bytes
SHA-256: 78e41d22cfe1b108de695a833aeb13a5a4665407c1c32a43a3aca7859f4a703d

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