PDF malware analysis — malicious · 1afe0a38480a5214

MALICIOUS

PDF

80.2 KB Created: 2021-08-28 15:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23

MD5: ce90e0cd71a7e964451a3264191ba941 SHA-1: 4a093761c916ff69914aa3cb599850b38cbab967 SHA-256: 1afe0a38480a5214c6e95d5515eb6d060d60229ac6be4eaf017cf37125cbd43f

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://huntic.ru/uplcv?utm_term=the+multistage+fitness+test PDF link annotation
- http://webinaris.net/ckfinder/userfiles/publics/files/7018032142.pdfIn PDF document text
- https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c1035a0ee28---radawedamoduwomuzizuwaw.pdfIn PDF document text
- http://elijahlaurabishopblack.com/clients/b/be/bed082b287f5bb70db4763ab929fc18a/File/2560112255.pdfIn PDF document text
- https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/kpg95mo0j6ktb1qldf07rtfggc/kidapebefifasavaxumovebu.pdfIn PDF document text
- http://sushigonewildtogo.com/uploads/files/jivodikisugozoxu.pdfIn PDF document text
- http://htwy.com/upload/file/92458463740.pdfIn PDF document text
- http://neoclassicalmansions.com/uplds/file/8252410317.pdfIn PDF document text
- http://slhs1958.com/clients/18590/File/lenumujifuminapitopowe.pdfIn PDF document text
- http://bibliotekaszamocin.pl/img/upload/files/22426582887.pdfIn PDF document text
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9eaed91cc0---kugepijewatikasosetomap.pdfIn PDF document text
- https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/41ef3e69d284a0f3a5acf2361c1588b6/solenexuzezusu.pdfIn PDF document text
- http://shuswapladystriders.ca/userfiles/file/zokulimufajif.pdfIn PDF document text
- https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/siiqa20vll22qgo2h795g7crk3/xunirekubudutuj.pdfIn PDF document text
- https://stillwaiting.org/userfiles/file/97336650569.pdfIn PDF document text
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/e8ivdc82r2r9o15ktmfi3qa97r/xunibudibew.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d673a6ce32a---kolukalevegazi.pdfIn PDF document text
- https://zlatartopalovic.rs//files/88799842180.pdfIn PDF document text
- http://mywymc.com/userfiles/file/82933220703.pdfIn PDF document text
- http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d0ede1bef---tawudozunew.pdfIn PDF document text
- https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160f917d2ad246---gakiwejijirik.pdfIn PDF document text
- http://isspskola.lv/userfiles/files/fomikuzi.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_off0000d63c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD63C	17112 bytes
SHA-256: `961edc6dcbdb9c0463dc7e17fa212f246dc9e2c0673e6aa0c5f8c130cb6324a5`
`font_01_sfnt_off0001024a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1024A	10504 bytes
SHA-256: `e3aa83a424180316fc83c457ff8f285c6426255527285098731b7caf5734f62b`
`font_02_sfnt_off000119f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x119F8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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