PDF malware analysis — malicious · 4454aabc79dc810a

MALICIOUS

PDF

80.2 KB Created: 2022-04-05 02:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12

MD5: 691c3629a50c4427500dddd1da9dc3ef SHA-1: b102eefcced45de06fc0144445b8495aa2f23708 SHA-256: 4454aabc79dc810adefe4ba7bcdb6aa47b2fb204f219a11da8d8f54f10d6232e

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. One of the extracted URLs points to a domain that appears to be related to SEO spam, further supporting this assessment. No scripts were extracted, but the presence of numerous external links indicates an attempt to redirect the user to potentially malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://fecuq.co.za/YmrXLWy8?keyword=william%20blackstone%20commentaries%20on%20the%20laws%20of%20england PDF link annotation
- https://voropulunonuz.weebly.com/uploads/1/3/5/3/135316946/volowipitoleju-metalinoru-gufetanozaj.pdfIn PDF document text
- https://pufabakorulur.weebly.com/uploads/1/3/4/3/134320636/belifenokamex.pdfIn PDF document text
- https://gozisali.weebly.com/uploads/1/3/4/6/134670052/kevesan.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621915da5e48f---jozol.pdfIn PDF document text
- https://tinijaxiri.weebly.com/uploads/1/3/4/4/134440903/226dffa128c.pdfIn PDF document text
- https://gerunujixode.weebly.com/uploads/1/3/1/6/131606408/24d272c05685aa8.pdfIn PDF document text
- http://khotelmarket.com/FileData/ckfinder/files/20220226_569F001FEC6DEB21.pdfIn PDF document text
- https://suludizivot.weebly.com/uploads/1/3/1/3/131383823/rewamugevikag.pdfIn PDF document text
- https://vujipobunovopo.weebly.com/uploads/1/3/5/3/135324227/zovup.pdfIn PDF document text
- https://nipujari.weebly.com/uploads/1/3/1/3/131384055/9128489.pdfIn PDF document text
- https://nezodutulep.weebly.com/uploads/1/3/4/8/134883135/0dd51b8636f7c.pdfIn PDF document text
- https://penepanixefi.weebly.com/uploads/1/3/4/3/134354239/tanuvogobisofub-sowimolijufake-vabedovojug.pdfIn PDF document text
- http://mgtuae.com/uploads/file/mapejiparuwobevabodipig.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/uprss3nm2n8acn9m1mpcbov286/gakibejuvezigiw.pdfIn PDF document text
- https://zitidatuviwe.weebly.com/uploads/1/3/4/4/134493200/164603070.pdfIn PDF document text
- http://smartsecurity24.pl/userfiles/file/776701138.pdfIn PDF document text
- https://gibotekiwifij.weebly.com/uploads/1/3/4/4/134444926/xemixili-petuvapis-tuxeran.pdfIn PDF document text
- https://kerawitoges.weebly.com/uploads/1/3/4/8/134878251/1454312.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_off0000d3f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD3F4	16924 bytes
SHA-256: `08ae87d3c30e8c590f086268b5e86782fa43c4fa8e0ea3c2c8d68c720b5e66f2`
`font_01_sfnt_off0001004a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1004A	11232 bytes
SHA-256: `33b4f183de5a25cba3326e64c00a728588ce70046e02c9b0b3396689edb9c166`
`font_02_sfnt_off00011a46.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A46	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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