PDF malware analysis — malicious · 1ec01d1be23e840f

MALICIOUS

PDF

82.2 KB Created: 2021-07-10 05:21:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 612403224d73d4bd4d065ac8f811dbef SHA-1: 09bb8206e526e1c4b48b17122d5750eb8f2c34e2 SHA-256: 1ec01d1be23e840fa40b8c806b42caf6b9a9b100496ea98fa87d6b46306d8479

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. It contains embedded JavaScript and numerous URLs that form a link farm, likely intended to redirect users to malicious sites for phishing or malware delivery. The presence of embedded JavaScript suggests an attempt to execute code within the user's browser or PDF reader.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://coretry.ru/uplcv?utm_term=putting+pdfs+together PDF link annotation
- https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/95edb0d4d11f98aaade89f0118a5deb5/jakivepebipowimaxelub.pdfIn PDF document text
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d4adf1b75---xefedabo.pdfIn PDF document text
- http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/86306722998.pdfIn PDF document text
- http://rockycheng.com/ckfinder/userfiles/files/39936279054.pdfIn PDF document text
- http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a5beb4815e6---4349782628.pdfIn PDF document text
- https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/b39c18aae69b25e4ba3945ed65bba4c1/wonixupupab.pdfIn PDF document text
- https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9b0f380b3---99649971853.pdfIn PDF document text
- https://licorne-hotel-restaurant.com/userfiles/file/42345985242.pdfIn PDF document text
- http://webdulich.com/js/ckfinder/userfiles/files/91471514985.pdfIn PDF document text
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16092ada4dea12---vojuserepud.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/1dbf7a246c034ec45841ab6fc81744d2/xutezi.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab12b4aa4d0---76538514919.pdfIn PDF document text
- https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/70c9uh36iqg8k9uel0hoh97560/3909558090.pdfIn PDF document text
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/tvj867em5img6q1ju1n3e5deg5/84511876516.pdfIn PDF document text
- http://tauben-buchmeier.de/kleinberliner-schuetzen/userfiles/files/3355711259.pdfIn PDF document text
- https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/d5c9d9a556463b872dc308ee55e2a9ff/47644359312.pdfIn PDF document text
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fba63e5786---10070939426.pdfIn PDF document text
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/e1c1bafa16c0b9431057ea10287c0b1e/doxisajeta.pdfIn PDF document text
- http://coffee33.ru/archive/file/bawidimijidon.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3b2ea00a02---ranulotigosol.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d99b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD99B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f1b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1B2	10672 bytes
SHA-256: `2e6326e509a82149f611af97a78db1bdd1dafbb7a16a8676928b84246cb83a9b`
`font_02_sfnt_off000109d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109D8	19732 bytes
SHA-256: `84c67ab1d40b180eea6fdb2cb0687b9d26c396dbbb48bf9a30acc0d172349d56`

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