PDF malware analysis — malicious · f871e82d4c616b95

MALICIOUS

PDF

81.7 KB Created: 2021-10-08 16:22:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17

MD5: 2d93cf26644e1db17f3ae2e60253978e SHA-1: 10447093a4560d9d2b78ab0f4600bb8586ac2970 SHA-256: f871e82d4c616b95b2bbabd458f2b461f294c70d813efb18911be2703cff7e5d

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9960

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://amindoost.ir/images/upload/files/87893997072.pdf In PDF document text
- http://selfmadefilms.nl/userfiles/files/senuvebesegabomen.pdfIn PDF document text
- https://iskoruma.com/upload/ckfinder/files/tufod.pdfIn PDF document text
- http://adanamega.com/userfiles/file/55847816846.pdfIn PDF document text
- http://onishi-kyosendo.jp/archive/62043150381.pdfIn PDF document text
- http://csc-0411.com/userfiles/file/20210927025334_8lslwu.pdfIn PDF document text
- https://banerjeetourspecial.in/ckfinder/userfiles/files/36661550333.pdfIn PDF document text
- http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfd5818f89---77398321499.pdfIn PDF document text
- https://jvlegacyhomerepairsmd.com/nbloom/fckuploads/file/zakoxajukusedo.pdfIn PDF document text
- http://www.hkrns.org.hk/ckfinder/userfiles/files/pisaweduro.pdfIn PDF document text
- https://reha.bg/content/upload/file/baxulago.pdfIn PDF document text
- https://livbiopharma.com/userfiles/file/zovuvukitodalewegukugeses.pdfIn PDF document text
- http://upoart.com/ckfinder/userfiles/files/99180582961.pdfIn PDF document text
- http://thenext.pk/userfiles/files/gikut.pdfIn PDF document text
- http://karmakonnect.org/DrumiBhatt/karmakonnect.org/Final/ckeditorimage/files/76088963088.pdfIn PDF document text
- https://kopari.hu/files/file/32405971697.pdfIn PDF document text
- http://avandcie-energy.fr/ckfinder/userfiles/files/64972538022.pdfIn PDF document text
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614494b863b1e---monawufuvikolafinejuza.pdfIn PDF document text
- http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1613e4ca6194b5---fekedevizenasakok.pdfIn PDF document text
- https://jancsoalapitvany.hu/ckfinder/userfiles/files/80682310897.pdfIn PDF document text
- http://vit-physio.de/file/16020393967.pdfIn PDF document text
- https://alrukn.co/userfiles/files/50984553956.pdfIn PDF document text
- https://ou-ravda.com/ckfinder/userfiles/files/15815523125.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=examples+of+steroidsPDF 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d814.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD814	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f026.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF026	18908 bytes
SHA-256: `4ecce91f079ea290a27d5a4cb580f30a7cf92eea5b5083ed5d0344e9513972ea`
`font_02_sfnt_off00012174.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12174	10640 bytes
SHA-256: `eda4e1c206312b65b262dde89b42150b2f2f61c920b796052f5ce4437d060d14`

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