PDF malware analysis — malicious · 25d69cc701a2bf6d

MALICIOUS

PDF

99.8 KB Created: 2021-07-07 02:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: 2e4e3ec8ab5e4e3f2f55c848d23c502b SHA-1: 89f242b219c8ff3c56dc961c53c137f59e6d5bcc SHA-256: 25d69cc701a2bf6d011ab06b5bea08ce594143405de0153d1f448224f180b63d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, likely to redirect users to malicious content. The presence of multiple external URIs and link farm characteristics strongly suggests a phishing or redirection attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9922

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://crewmak.ru/uplcv?utm_term=how+does+energy+move+through+a+food+web PDF link annotation
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16086f25b873ee---kulaxasamutuzajix.pdfIn PDF document text
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a6adada99e2---xojizoduzijerepizif.pdfIn PDF document text
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/pehddpfl9aokdnjr1i3sdfdjap/288525216.pdfIn PDF document text
- https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/fri8vvp6qre829att7g2okegf4/33549157852.pdfIn PDF document text
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/ac96c219d1fbc9b88dddf197d3025fcb/kuvilimun.pdfIn PDF document text
- http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/83c801dc06de90e4239807f71f1f7e9a/41509739036.pdfIn PDF document text
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f306e84552---tejinibubunifa.pdfIn PDF document text
- http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/mgf92mrnlrh6o0ckgd7qfb69m0/88221280539.pdfIn PDF document text
- http://sherwoodchambergolf.org/ckfinder/userfiles/files/52025298753.pdfIn PDF document text
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/fd7bd541270783828f85bae16caf1666/jipipu.pdfIn PDF document text
- https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/1db6132d7a4f0b639dff75651a7761ff/36150980323.pdfIn PDF document text
- https://moto-trend.cz/public/files/fck/file/reruzirowal.pdfIn PDF document text
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c296ff8a581---94260809615.pdfIn PDF document text
- http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/6hiqadhrkjd811pt9v0kj3sdr3/puwutoxabibewikimepaket.pdfIn PDF document text
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c28cd2ad96d---dikomalugemobiv.pdfIn PDF document text
- http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/jgincl3tr63aq1vblm9qj3ucbt/78052942606.pdfIn PDF document text
- https://pk-kuepfer.ch/ckfinder/userfiles/files/81214135887.pdfIn PDF document text
- http://diagnosticaedilizia.com/userfiles/files/53610678644.pdfIn PDF document text
- https://langestrand.se/anvandarbilder/204/files/madakanukavo.pdfIn PDF document text
- https://led7.ru/file/lurowi.pdfIn PDF document text
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e22953e3c---vutakidita.pdfIn PDF document text
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160729d0885512---tisufar.pdfIn PDF document text
- http://duquenne-moteurs.fr/webroot/upload/files/14966312978.pdfIn PDF document text
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/045c19af1b5eca80f5f5204e15280e88/mezig.pdfIn PDF document text
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/ob5de4jibv20m2j18b1ulg1ke4/zazevenuxafeda.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_off00012200.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12200	17796 bytes
SHA-256: `1eb8a68ae9ee80c88841218ca580d6bf52733b91f56e904e6a999730c69f6e52`
`font_01_sfnt_off00015027.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15027	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001683e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1683E	11160 bytes
SHA-256: `d99e79f4656d994188e7dbed9ace4057e4f62eb73b1399e1fbe38583f0dd38a0`

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