PDF malware analysis — malicious · 10974f1d7e8395da

MALICIOUS

PDF

81.2 KB Created: 2021-09-21 02:26:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: e3a2e32346fc15d84f4c3b3d1bc797bb SHA-1: 6ceda6e0e23dd187cc4146608a12e63c9b4e3df5 SHA-256: 10974f1d7e8395dae6b84a83eeab496ae046ce00d6b55f4bfd4cfab0b1210fa7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link farm pointing to various domains, many of which are hosted on disposable infrastructure or compromised CMS uploads, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery. No scripts were extracted, but the presence of numerous external links and the heuristic firings point to an attack pattern focused on redirecting users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

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://allytemp.ru/uplcv?utm_term=avee+player+mod+template+download PDF link annotation
- http://pfollowers.com/ci/userfiles/files/senavewez.pdfIn PDF document text
- http://cokhixnktientien.com/Images_upload/files/84273924198.pdfIn PDF document text
- http://virtuozi.ru/sites/all/sites/virtuozi.ru/files/magajumasuv.pdfIn PDF document text
- https://akconta.com/uploads/files/tasax.pdfIn PDF document text
- https://newsale.linyn.mobi/upload/ckeditor/pages/files/70007592566.pdfIn PDF document text
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/c9a7f0dd54e1f69249580c87f00e27bd/55671086791.pdfIn PDF document text
- https://dimensioninteractive.com/WYSIWYGImage/file/zemokabomewifamu.pdfIn PDF document text
- http://thelonerangerfanclub.com/ckfinder/userfiles/files/jazenade.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e196d4bf4d---viladenoz.pdfIn PDF document text
- http://dopuskvsro.ru/UserFiles/lofedovegisepulanag.pdfIn PDF document text
- http://steakpluspizza.us/userfiles/file/84846088720.pdfIn PDF document text
- http://ylpcl.com/ckfinder/userfiles/files/rokijutovoxutomatewubu.pdfIn PDF document text
- https://dondepodemosir.com/userfiles/file/81528108797.pdfIn PDF document text
- http://slbreakingnews.com/ckfinder/userfiles/files/sorerewotom.pdfIn PDF document text
- https://bio-obst-und-gemuese.de/userfiles/file/27451225186.pdfIn PDF document text
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/843hpdiqv8jm5l5gcvi98oq7kn/22010124443.pdfIn PDF document text
- http://bekkercoon.ru/ckfinder/userfiles/files/xoxenuwojuwegukubogi.pdfIn PDF document text
- http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/zilim.pdfIn PDF document text
- https://franchiseharbor.com/files/files/morebelalorezezo.pdfIn PDF document text
- http://niktid.ru/userfiles/file/pagufiwezonoxebex.pdfIn PDF document text
- http://orenprom.com/img/account/file/bukibijonemumagawiwitu.pdfIn PDF document text
- https://aldwalia.com/userfiles/files/85038622269.pdfIn PDF document text
- https://franciscojaviermoreno.com/DocsCKeditor/files/wotafapominagasuze.pdfIn PDF document text
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16139676eb1251---vudolorokevusuwodokilo.pdfIn PDF document text
- http://bon-mar.com/fck_user_files/file/lakup.pdfIn PDF document text
- http://lamorenj.com/userfiles/file/meramoresafofonobewa.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_off0000d610.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD610	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ee27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE27	10540 bytes
SHA-256: `022fe92a041de9ccb8fdded2b013d44da603fd9c91fd98ba7f346c5eba48800e`
`font_02_sfnt_off0001063e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1063E	18792 bytes
SHA-256: `8a0944617f314eb6598062acd767c88cd059855a89f0d350e46ecb1c6ac9302e`

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