PDF malware analysis — malicious · 2d9d38059e1a36e0

MALICIOUS

PDF

77.6 KB Created: 2021-09-01 01:04:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: f5279cf45d3a644e007ab2d2a3a577f6 SHA-1: 9ced9bece37e7803b5497c9628f896c7e936e013 SHA-256: 2d9d38059e1a36e0f9b3b4f23fc9e0eddee663cebaea7c8388327c42022da9bf

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting it functions as a link farm to distribute further malicious content. The document body is heavily obfuscated and unreadable, but the presence of multiple external URIs and the heuristic firings strongly suggest a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9827

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://oniceh.ru/uplcv?utm_term=square+root+with+variables PDF link annotation
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/c41911bbdceaa236c7ef6e43b243d77a/danomudafol.pdfIn PDF document text
- http://alexlunacoach.com/img/editor/file/xetajogenemakajipo.pdfIn PDF document text
- http://apexnepaltravel.com/userfiles/file/zoxavaziwibiv.pdfIn PDF document text
- http://gaskinfamilyreunion.com/clients/b/b7/b798c9f9e2af69c3a5b950a06e4ade8e/File/81461043468.pdfIn PDF document text
- http://thetsaban3watnuea.com/UserFiles/file/27407366082.pdfIn PDF document text
- https://tasivn.com/upload/ck/files/31112459849.pdfIn PDF document text
- https://cowichanseniors.ca/userfiles/file/senibamevokit.pdfIn PDF document text
- http://weddingceremoniesbybev.com/clients/72651/File/57259665994.pdfIn PDF document text
- https://dcoderesearch.com/uploads/77269729551.pdfIn PDF document text
- https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/tbb8v52ckun0ls0hqgevsaru9o/giridoderud.pdfIn PDF document text
- http://tuclubcr.com/campannas/file/21292917247.pdfIn PDF document text
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/e4b13737775c256144e60b118da2c16b/namopi.pdfIn PDF document text
- http://accessiblevehicleservices.com/userfiles/file/17956332955.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c91fc3d104c---29316923558.pdfIn PDF document text
- http://slp61.com/clients/e/e2/e296dcecfd7d10ffef0cc83fef253c72/File/taxigepipovaxebiduxala.pdfIn PDF document text
- http://denki-shonan.com/uploadsfile/75987621224.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/94069584b7761dcc140fbad84d11e6d7/zeziniridanejebix.pdfIn PDF document text
- http://clear-es.net/yamituki-n/uploads/files/69588808427.pdfIn PDF document text
- http://sdds.be/userfiles/file/47614197987.pdfIn PDF document text
- http://daivupaint.com/img-chamthi/files/92526162917.pdfIn PDF document text
- http://aapltd.net/userfiles/file/16431568538.pdfIn PDF document text
- http://mikomisushiwc.com/uploads/files/wiviralus.pdfIn PDF document text
- https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/l55lj0u2c0chl8e29nlulj78m4/24773962966.pdfIn PDF document text
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/foge1ioksg46nge9oi8bka9cch/43007748584.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/6b9e040d5e5e0a25ad17cd76652419dd/3593616798.pdfIn PDF document text
- https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/7lmg5a7c6s76o3ls7q9b8kbhhm/3645887575.pdfIn PDF document text
- https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/88uol84ktgl95pb2595lh168gl/85795923653.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_off0000c971.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC971	18024 bytes
SHA-256: `2c750fe1100663131b45357147b47398e3aedb8e41e33f062befdcf977ce319a`
`font_01_sfnt_off0000f831.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF831	10712 bytes
SHA-256: `da221031fc33088eb58aecb1f4a5ff689dcfffe5452c092798d614edb74f6c3b`
`font_02_sfnt_off000110fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110FA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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