PDF malware analysis — malicious · 8ab85296271b07e4

MALICIOUS

PDF

81.9 KB Created: 2021-09-20 23:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 3d6315c837d7a0d62ae2612b583b56bd SHA-1: e14906e0e21eb3ecdbe8b43a6d3cff79c565e9d4 SHA-256: 8ab85296271b07e445de8091415580625efc6419ac482d5297cbeea48b07054e

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URLs, suggesting it is designed to redirect users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a link farm on disposable hosting, commonly used for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://inwebjor.ru/uplcv?utm_term=hello+neighbor+hide+and+seek+android+beta PDF link annotation
- https://sentinels.ro/userfiles/file/43891821869.pdfIn PDF document text
- http://nofatrans-int.com/userfiles/file/55175166250.pdfIn PDF document text
- https://movie2book.com/userfiles/file/27958253541.pdfIn PDF document text
- https://bankkartya.hu/js/ckfinder/userfiles/files/disasatigadigapakabugoxaj.pdfIn PDF document text
- https://msiutilities.net/documents/vuruzutujumujoraxoral.pdfIn PDF document text
- http://radio-salsa.fr/php/rs/filesupload/file/99612205929.pdfIn PDF document text
- http://inannamsao.com/uploads/files/bujogiwumazujebakukuw.pdfIn PDF document text
- http://someteme.com/archivos/_20210913084724.pdfIn PDF document text
- http://clairerolo.com/userfiles/file/fokekosefidefep.pdfIn PDF document text
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614217daa21ae---bulasuji.pdfIn PDF document text
- https://spirit-legend-enterprises.com/webroot/editor-uploads/files/ranefeporo.pdfIn PDF document text
- http://spielundlicht.de/content_provider/documents/files/vukofegitibanu.pdfIn PDF document text
- http://woodlandhills.ilovepokebar.com/uploads/files/11869495085.pdfIn PDF document text
- https://tourpon.kr/FileData/ckfinder/files/20210916_FC89CD8FDA0DA176.pdfIn PDF document text
- http://aroma-es.red/yamituki-n/uploads/files/nemetuvatirajajunonixo.pdfIn PDF document text
- http://kperrylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/53240300747.pdfIn PDF document text
- http://podhoru.cz/userfiles/file/nenakulajotolawuj.pdfIn PDF document text
- https://cr2tek.com/userfiles/Proj_Name/files/86457881702.pdfIn PDF document text
- http://weiddy.com/uploads/files/202109091449141580.pdfIn PDF document text
- https://gdaniec.com/upload/files/rofasoru.pdfIn PDF document text
- http://vaynhe.com/upload/files/zojosizi.pdfIn PDF document text
- http://www.moyekolodin.com/files/62338778168.pdfIn PDF document text
- http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/19245685873.pdfIn PDF document text
- https://www.bmo-agencement.fr/ckfinder/userfiles/files/22066560782.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_off0000da62.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA62	10748 bytes
SHA-256: `257ed3e9ccf7919cda3aacd0be9a3daef0f32b62d2cb736bd86022def5f58990`
`font_01_sfnt_off0000f2be.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2BE	17712 bytes
SHA-256: `0fa76a532d791630b76e5953c20d0095721d22b2efb7a4ea0a49782d4888016f`
`font_02_sfnt_off00011fba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11FBA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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