PDF malware analysis — malicious · 8aaeb4c72ded3a84

MALICIOUS

PDF

99.2 KB Created: 2021-09-08 21:04:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 6017a8a43c7273acb2b90a48ebab45e7 SHA-1: 6d0e38935c7542ccefed3422dcdf1adf50afa7d6 SHA-256: 8aaeb4c72ded3a844568b7a98c4515b67a35410255f9bee09eee256dfd81d7d1

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to suspicious domains, suggesting a link farm or redirection mechanism to deliver malicious content. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a deliberate attempt to obscure the final destination through a large number of distinct, potentially disposable hosts.

Machine Learning

Nyx PDF Classifier malicious score 0.9922

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://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131da69edc4d---94583237794.pdf In PDF document text
- https://specialgarden.ro/userfiles/file/wujenoledebamomigo.pdfIn PDF document text
- https://mudrun.com/home/mud/public_html/ckfinder/userfiles/files/vufidosilovetedalemalijup.pdfIn PDF document text
- http://nhac.ditimchanly.org/Images_upload/files/bekusaxikajamimazal.pdfIn PDF document text
- http://hmconcretemixingplant.ru/d/files/27314910022.pdfIn PDF document text
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/e935e0737f8515496fa30f3274494da3/56519266588.pdfIn PDF document text
- https://handinhand-daycare.com/ckfinder/userfiles/files/porazoxu.pdfIn PDF document text
- http://premiercontractinginc.com/files/file/puzijetin.pdfIn PDF document text
- https://isigakizima.net/img/tmp/file/gorumamusepolumim.pdfIn PDF document text
- https://satyawatioverseas.com/userfiles/file/87848666448.pdfIn PDF document text
- http://amexeuro.com/an3_Uploads/file/zirowulaxujejenekovo.pdfIn PDF document text
- http://strahovka66.ru/userfiles/file/45136120214.pdfIn PDF document text
- http://7sate.com/filespath/files/20210908152531.pdfIn PDF document text
- https://kaskad-74.ru/images/uploads/37932284796.pdfIn PDF document text
- https://simon-daulte.com/ckfinder/userfiles/files/vewoxetilokafejaj.pdfIn PDF document text
- https://navoloki.mebel18.com/uploads/files/37528622908.pdfIn PDF document text
- http://www.ezmoving.com/file/29818555674.pdfIn PDF document text
- https://isigakizima.net/img/tmp/file/sozixowaxezuvuvososu.pdfIn PDF document text
- http://aitrans.cn/UploadFile/file/F1202109070118519846.pdfIn PDF document text
- http://netinflux.net/userfiles/file/wosug.pdfIn PDF document text
- http://electrogalicia.com/electrogalicia/recursos/archivos/robisoju.pdfIn PDF document text
- https://aecvfcom.nrgence.com/upload/userfiles/files/69589655126.pdfIn PDF document text
- https://doluhosting.com/calisma2/files/uploads/93629934894.pdfIn PDF document text
- http://gurukripapublicschool.com/userfiles/file/39846310312.pdfIn PDF document text
- https://tatsolarlight.com/uploads/files/zexeduxuviside.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=electrotherapy+contraindications+pdfPDF link annotation
- 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_off000118b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118B3	20340 bytes
SHA-256: `c6ff480072a76de9b35caf9c77a2e79234e0aadf3aa4ace62fc9bfaf8fd547e9`
`font_01_sfnt_off00014e12.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14E12	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00016629.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16629	10816 bytes
SHA-256: `b30a9378bbcd727404e8e8ee55bcd42329f053045f031ff696a0799f54681820`

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