PDF malware analysis — malicious · 206fdc01696fd3e3

MALICIOUS

PDF

72.5 KB Created: 2021-09-25 10:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 99cd7ec43f8d430ece16279efd2e1753 SHA-1: 2f633f531103e47fe8b860d35618c3bc29bac904 SHA-256: 206fdc01696fd3e350dfe2c321236f908855258df693f34b62cfba814d8f86d7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to multiple compromised CMS upload storages and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

Nyx PDF Classifier malicious score 0.9915

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 http://bladensburg.abwingsmd.com/uploads/files/88288660288.pdf In PDF document text
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16132755f806d8---metedabinafinaxipofu.pdfIn PDF document text
- http://jingyitech.com/uploadfile/39089714003.pdfIn PDF document text
- http://hotelpenza58.ru/ckfinder/userfiles/files/82734294581.pdfIn PDF document text
- http://baracenter.be/userfiles/file/tutoxunexikudigisoni.pdfIn PDF document text
- https://ndmoyun.com/calisma2/files/uploads/neravifitabepezu.pdfIn PDF document text
- http://dichvumucin.com/upload/ckupload/files/kigebuwovinejuru.pdfIn PDF document text
- https://gaadalagi.com/contents/files/39494624558.pdfIn PDF document text
- http://ktcyy.com/ckfinder/userfiles/files/gemawininabovemulavokefum.pdfIn PDF document text
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148e490e579d---widatupe.pdfIn PDF document text
- https://www.syria-report.com/sites/all/libraries/ckfinder/userfiles/files/xixulibiranemawogol.pdfIn PDF document text
- http://www.schule.havonix.com/ckfinder/userfiles/files/66131464568.pdfIn PDF document text
- https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/56f3878e2dd23dc4f00bcaacc42fbdb5/kakime.pdfIn PDF document text
- http://nemdanangpho.com/uploads/2021-09-13/images/files/18730223956.pdfIn PDF document text
- http://arablift.net/userfiles/file/kowaxupatowodebogur.pdfIn PDF document text
- http://hurtmar.pl/Upload/file/42451872170.pdfIn PDF document text
- https://carlojans.com/cms/file/39883649757.pdfIn PDF document text
- http://kolkandkolkdesign.com/site/data/ws/files/rajogusavexuxukureleg.pdfIn PDF document text
- https://liho.cz/UserFiles/File/nebeguwi.pdfIn PDF document text
- https://pepinieramontana.ro/ckfinder/userfiles/files/ruxibikijepot.pdfIn PDF document text
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1613383d8e873b---nejigozuranuruzuju.pdfIn PDF document text
- https://szaniterplaza.hu/ckfinder/userfiles/files/benidefilezarexu.pdfIn PDF document text
- http://artemon.nl/userfiles/file/93002146195.pdfIn PDF document text
- http://exms.fr/sites/default/files/file/1183580876.pdfIn PDF document text
- https://ashasuchikala.com/ckfinder/userfiles/files/66129484620.pdfIn PDF document text
- http://sinosteelcode.com/filespath/files/20210920140747.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=rollercoaster+tycoon+4+mobile+mod+apkPDF 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_off0000b79b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB79B	11144 bytes
SHA-256: `33dcfb91831aea108033a9a245de816850675c47e89a7c9c0499958c06f442e6`
`font_01_sfnt_off0000d178.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD178	16556 bytes
SHA-256: `763ab470eb9ea806da4c51858ef1ade333a81ad04cbd763d0bfd10aa5e9379a0`
`font_02_sfnt_off0000fba7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBA7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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