PDF malware analysis — malicious · 9411e25e03cc7d7c

MALICIOUS

PDF

85.8 KB Created: 2022-04-13 01:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12

MD5: c8d64dbc1e0bca2e940258516f7851fe SHA-1: 4763798afe143c48996a0ef023eef62d054cea49 SHA-256: 9411e25e03cc7d7cfd672e1231c8b064e680d2ef0091c7f6a4db245d946eb815

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and disposable hosting. These links likely serve to redirect users to malicious content or phishing pages, aligning with a spearphishing attachment attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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 https://lovig.co.za/YmrXLWy8?keyword=acer%20aspire%20v5%20no%20operating%20system%20found PDF link annotation
- http://chanakyaaerospacedefence.com/userfiles/file/69689998610.pdfIn PDF document text
- https://www.fondazionepolis.it/blog/ckeditor_fullcolor/kcfinder/upload/files/rojiwemojokivuduxo.pdfIn PDF document text
- https://velulaganivuvoj.weebly.com/uploads/1/3/4/4/134438708/3519752.pdfIn PDF document text
- https://rulovuwupe.weebly.com/uploads/1/3/5/3/135386045/xisazapojulo_murupikix_puluzipilu.pdfIn PDF document text
- http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/162306dd563205---buzokomawaxaxewavigemo.pdfIn PDF document text
- https://ms2gacor.com/contents/files/xevidalabetekejasi.pdfIn PDF document text
- https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/12140470493.pdfIn PDF document text
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1621440ac007b4---6262513144.pdfIn PDF document text
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1622694c69c8d1---9728361218.pdfIn PDF document text
- https://loloxemevo.weebly.com/uploads/1/3/0/7/130739498/jutagisu.pdfIn PDF document text
- https://kristinanamaste.eu/files/19032455668.pdfIn PDF document text
- https://wuwikofoxanep.weebly.com/uploads/1/3/1/4/131437976/9272999.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1623ba5c43e690---mofuxobopibiv.pdfIn PDF document text
- https://www.bevillelecomte.com/ckfinder/userfiles/files/1881666812.pdfIn PDF document text
- https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/7017bead9d85259081dce10a8256a11d/tedezejeto.pdfIn PDF document text
- https://nopumalazaf.weebly.com/uploads/1/3/0/8/130813483/7436841.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_off0000e893.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE893	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000100a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100A5	17768 bytes
SHA-256: `efc577042a1fc9286c53ca21e86adcc05fb7a9d674a300b094b95e33b56c524b`
`font_02_sfnt_off00012f42.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F42	11312 bytes
SHA-256: `e91db9f25032dcdcd23a158e8f9f3aed1f743a11b4b97c2b86a8b22823bca365`

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