PDF malware analysis — malicious · 05d235948cb036d2

MALICIOUS

PDF

79.8 KB Created: 2021-09-11 10:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 6019bf4a613a02694b6ed8ec04f162d0 SHA-1: 38d9e161d5be2db1b23be4a08950ccf16387d581 SHA-256: 05d235948cb036d2cd39262a244e7de143683a470215626fab167e50c6b91534

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The presence of external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest the document's purpose is to redirect users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

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://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/pibewe.pdf In PDF document text
- http://ptaki.info/imgekoprojekty/files/89476219221.pdfIn PDF document text
- http://tramtronbetong.com/uploads/userfiles/file/29198079205.pdfIn PDF document text
- http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bomazejode.pdfIn PDF document text
- http://spbmedax.ru/sites/default/files/uploads/2234897491.pdfIn PDF document text
- https://bevillelecomte.ovh/ckfinder/userfiles/files/sofezupelolizo.pdfIn PDF document text
- http://anpo.vn/upload/files/28592455861.pdfIn PDF document text
- http://www.amedna.com/userfiles/files/musarimupuzemewuvaxe.pdfIn PDF document text
- https://childprotectionindia.com/lexcyberia/userfiles/files/nitesisukanefulim.pdfIn PDF document text
- https://clifestyle.net/uploades/userfiles/file/bavifud.pdfIn PDF document text
- http://evo-models.com/uploads/userfiles/files/delodajok.pdfIn PDF document text
- https://www.koreayokogawa.com/ckfinder/userfiles/files/99825592412.pdfIn PDF document text
- https://ratodua.com/contents/files/bapedi.pdfIn PDF document text
- http://www.gonouvellezelande.com/files/buleranunusikabarija.pdfIn PDF document text
- https://getadoc.in/ckfinder/userfiles/files/10218117630.pdfIn PDF document text
- http://dongphat.net/upload/files/dadowewebajesonuxuwuzejo.pdfIn PDF document text
- http://mcenterdk.ru/fck_editor_files/files/54083527314.pdfIn PDF document text
- http://bmcnx.com/userfiles/file/narovoju.pdfIn PDF document text
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/f19e943ff8bf733b01c15b37cda0baa3/kerutamalikurijita.pdfIn PDF document text
- https://www.colline-eternelle.com/ckfinder/userfiles/files/mijuridigovali.pdfIn PDF document text
- http://rebeccafantarchitetto.it/userfiles/files/38122106908.pdfIn PDF document text
- http://goldsunjsc.com/upload/files/55633691172.pdfIn PDF document text
- http://falconartistmanagement.com/ckfinder/userfiles/files/12677043781.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=mobdro+mod+apkPDF link annotation
- https://www.thc.gda.pl/ckfinder/userfiles/files/gevopakuj.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_off0000d765.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD765	10136 bytes
SHA-256: `7da81fc31c30567cc2d1435e82ad836a40f66fdf0a3e60c5f15934dda90d2b42`
`font_01_sfnt_off0000edc2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDC2	16924 bytes
SHA-256: `520266351dc94e29530a0de1ebcac93db5afc368537fd1a1517a553450bac5a6`
`font_02_sfnt_off00011964.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11964	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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