PDF malware analysis — malicious · 2d7e37d5f388cedc

MALICIOUS

PDF

75.8 KB Created: 2021-07-13 23:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: 3a41137c5f19891ea02e6d3751dc8609 SHA-1: 2a3ecf0ab17d17635d239747da42d163e9d2cfc2 SHA-256: 2d7e37d5f388cedc7cb9a2240b9cf9da21a5675fdd9b27ea42ec28f7eea0d0b6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by a machine learning classifier and ClamAV, which detected it as a phishing trojan. The file functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other disposable hosting. These links are likely intended to redirect users to phishing pages or download further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9948

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://philabc.ru/uplcv?utm_term=point+dume+rock+climbing PDF link annotation
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/16094b074da251---rokawutibadexom.pdfIn PDF document text
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e276dc85ef---xozok.pdfIn PDF document text
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839fc674a66---tixez.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a6318ec61ec---97567658394.pdfIn PDF document text
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609af373a15c3---10226970980.pdfIn PDF document text
- http://romanakladatelstvi.cz/userfiles/file/vogonegopiwagepuxigixeb.pdfIn PDF document text
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/46a20ede2ddccb3ba3a26afcd30d688f/fexajem.pdfIn PDF document text
- https://betenagro.com/sites/default/files/file/nuzolamonaroraxinonub.pdfIn PDF document text
- https://securitydm.com/slicice/file/14637503302.pdfIn PDF document text
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/7e93e6bc723e71daec027d7e5f68b855/tolanabijife.pdfIn PDF document text
- http://kunjipsc.com/uploads/files/vulilef.pdfIn PDF document text
- http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/mebanevupamagu.pdfIn PDF document text
- https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/e6f2c8cf903eec084879fc8988165ebe/54350597537.pdfIn PDF document text
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092c7067f1f6---71119728669.pdfIn PDF document text
- http://danies.ru/ckfinder/userfiles/files/9952658577.pdfIn PDF document text
- https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/isv80gd18qua4fbjphc57e6sng/sijojigamonawafuxuli.pdfIn PDF document text
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3ba29d612---38764679076.pdfIn PDF document text
- https://dialogueinpraxis.net/files/docs/jotifomipala.pdfIn PDF document text
- https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/62f66a57dc94ae0261667e94f457e63a/jojivafapalezukemuxirike.pdfIn PDF document text
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/b02q2qfmema8pkvvphjdlqln2q/ribowepem.pdfIn PDF document text
- http://mstreatmentadvances.com/userfiles/files/lizimufabatoro.pdfIn PDF document text
- http://gagutp.com/sa_upload/userfiles/file/20210531082617.pdfIn PDF document text
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/03293661e7aa5a67286c01ac6166ed0e/17463855360.pdfIn PDF document text
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160788e56a9fb9---nakarenem.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_off0000c838.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC838	10716 bytes
SHA-256: `2dfef5919d8a6568bcf1b5d6661586005e56486135a631847e93c50d019cee88`
`font_01_sfnt_off0000e088.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE088	16032 bytes
SHA-256: `1783bd09b0de57cd886dc7cf7df87cb1d541cbcc978531bbba6ab8b996f46d4a`
`font_02_sfnt_off000109f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109F0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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