PDF malware analysis — malicious · 795751389ed06751

MALICIOUS

PDF

85.7 KB Created: 2021-08-30 10:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 44295a1eaac6ecc5cabdf5942cb4b735 SHA-1: cc33b4861bddfe05725270da56762ef8a1f8ecad SHA-256: 795751389ed06751e116f005e1095e6d99d3ac057d680ab99ca63c9a56a34487

156 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 identifying it as a phishing trojan. The document contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9982

Heuristics 6

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.
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://garglob.ru/uplcv?utm_term=school+management+system+synopsis+pdf PDF link annotation
- http://tsrmmessina.it/userfiles/files/41005142583.pdfIn PDF document text
- http://energy-labels.com/userfiles/file/39889388898.pdfIn PDF document text
- https://migger.dk/userimages/file/93963270653.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608671cc2e70e---gafudawotasiv.pdfIn PDF document text
- https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/8b678848f5650acfabc2fc9e01c0b7d6/86479623089.pdfIn PDF document text
- http://porpora.biz/imagenes/imagenes_contenidos///7355218785.pdfIn PDF document text
- http://agcslohian.com/userfiles/file/48221350661.pdfIn PDF document text
- http://theheavent.com/userfiles/files/1324338279.pdfIn PDF document text
- https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/f5399cbd341d29b784cd36d367e848d3/gugazesogetasawirapowi.pdfIn PDF document text
- https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/147dc83de3dca87a5353a6305aa00c2a/bekazupupadisuzebepazukob.pdfIn PDF document text
- http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608412997b64d---82450439714.pdfIn PDF document text
- http://galantemontagnana.it/ckfinder/userfiles/files/lutabelixupu.pdfIn PDF document text
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/0a9fba7606530a7c792e393e364d96c5/83413458775.pdfIn PDF document text
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c9b67f9936ea28a1399285cb6cc85138/bajerulonojuvupu.pdfIn PDF document text
- http://shsclassof1959.com/clients/a/a7/a7a82b2a6025f7fafce5d77be70bf845/File/43288243606.pdfIn PDF document text
- https://hmanagement.net/userfiles/file/ziduwige.pdfIn PDF document text
- http://immodraft.de/images/architekten_agentur_images_/file/bexafogot.pdfIn PDF document text
- http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/6d836e4887cb37aa9beaaa1722af5337/wutoz.pdfIn PDF document text
- https://www.mmgrowersg.com/ckfinder/userfiles/files/zewegirimule.pdfIn PDF document text
- http://cornucopiafrederick.com/uploads/files/63792342620.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/fc5eda74989a1f12dfa4bd8de7d85611/31255503388.pdfIn PDF document text
- http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608995d63212a---gabutarefawagivo.pdfIn PDF document text
- http://brmhn.com/userfiles/file/20210525034627_z7k7nz.pdfIn PDF document text
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/cbe53783f2654a9c8df451c0db4b802e/4527369226.pdfIn PDF document text
- https://bibliothequedesarts.ch/ckfinder/userfiles/files/58771867454.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_off0000e8ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8AB	11156 bytes
SHA-256: `fdf9135707ce9ab93d4ff9a58917cc36b205bfe5beedaefdc6852afe4251fa4f`
`font_01_sfnt_off0001025e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1025E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011a70.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A70	17720 bytes
SHA-256: `62d0bb1223aa5174f738393bdea3e274b1229a457260e16b4d5fda317c23211f`

Open this report in the interactive analyzer, or submit your own file for analysis.