PDF malware analysis — malicious · a0287f6abdd12849

MALICIOUS

PDF

76.9 KB Created: 2021-09-09 15:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 9f181214d5f35b5d030c0d1d9b1ec912 SHA-1: faf3a9c2ab53d21421fd7c0d51fae4e11172b84d SHA-256: a0287f6abdd12849cab9ef39c2a7f6ff0312d7b2b6a7e7a7dbc22a3462dbd5ba

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, including one that appears to be a lure for a game modification APK, but redirects to a disposable hosting domain. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the presence of multiple link farms and the ML/ClamAV detections strongly suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9840

Heuristics 5

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.
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=mod+apk+for+asphalt+8 PDF link annotation
- https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/75120575135.pdfIn PDF document text
- https://ssmavidiyar.com/public/content-images/files/sifawigemovelorimigupejoj.pdfIn PDF document text
- http://tourbusan.net/FileData/ckfinder/files/20210903_B233447EA22C4863.pdfIn PDF document text
- http://karinameal.com/imgdish/files/zinifuwanubofopu.pdfIn PDF document text
- https://irepairplus.nl/app/webroot/files/userfiles/files/88501304448.pdfIn PDF document text
- https://piataafacerilor.ro/app/webroot/files/userfiles/files/68657915819.pdfIn PDF document text
- http://rsentco.com/upload/file/19026278504.pdfIn PDF document text
- http://baihsad.com/userfiles/files/20210905_192514.pdfIn PDF document text
- http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/59311992762.pdfIn PDF document text
- http://goldendazzle.com/upload/quangtri/files/70201187089.pdfIn PDF document text
- http://jyczgj.com/UploadFiles/file///2021090215002463.pdfIn PDF document text
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/dl16gdcgjchqfntb6t4nvsnrv3/37468772268.pdfIn PDF document text
- http://bandenplaats.nl/cmsimages/file/ridejurusulolepi.pdfIn PDF document text
- http://rem-proekt.com/f/file/7676986239.pdfIn PDF document text
- http://ifaistos.reality.gr/~triantaf/images/file/wireleboj.pdfIn PDF document text
- http://capesociety.ca/uploads/files/29739959897.pdfIn PDF document text
- http://sanxuatbanthinghiem.org/app/webroot/uploads/files/67230865197.pdfIn PDF document text
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1613495a4e8f11---47691911376.pdfIn PDF document text
- http://umbabox.com/userfiles/file/51871874465.pdfIn PDF document text
- https://kristinanamaste.eu/files/91009106603.pdfIn PDF document text
- http://onlinevay.com/upload/files/xarekus.pdfIn PDF document text
- http://climacom.eu/userfiles/files/zifofopaf.pdfIn PDF document text
- http://22vek-omsk.ru/fck_editor_files/files/fogakisivol.pdfIn PDF document text
- http://malagi.pl/user-files/fck/file/19287915317.pdfIn PDF document text
- https://underworldgear.com/upload/users/files/nozixawobetabalepexaz.pdfIn PDF document text
- http://suliaox.com/v15/Upload/file/202199844203718.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_off0000c8a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC8A5	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e0b7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0B7	17504 bytes
SHA-256: `1350fc741d96b400f095f4639728cf97bd245ffde7dd163bad20d03d854cfb95`
`font_02_sfnt_off00010e31.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E31	10560 bytes
SHA-256: `d028e7b69aae1b8cfe3d9e08cf867553454fd49c846aa743657670c8595f26a2`

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