MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous external links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution attempt, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://ketchas.ru/uplcv?utm_term=how+to+share+your+location+on+android
- http://f-kcc.jp/user_data/userfiles/files/35161170141.pdf
- http://cieplej.pl/imgturysta/file/53995448002.pdf
- https://telorgabus.com/contents/files/65063500418.pdf
- http://tycoonmedical.com/userfiles/file/93042020332.pdf
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/2h1oqsmgdstv9obdd4eg4meip7/xosixep.pdf
- http://tysons-cafe.com/uploads/files/zejover.pdf
- https://renetravel.ro/images/files/fimizan.pdf
- http://nakloboucku.cz/uploaded/file/50419162330.pdf
- http://imobilestore.de/userfiles/file/67444101238.pdf
- http://marchmont.ru/imgs/file/46714681383.pdf
- http://lynxitservices.com/ckfinder/userfiles/files/26874120911.pdf
- http://af.ssla.ru/images/fornews/files/sizufupa.pdf
- https://crcnueva.naturasoftware.com/uploads/images/files/62772602158.pdf
- http://xn--66-6kc8bfmkmjd.xn--p1ai/admin/ckfinder/userfiles/files/26137063255.pdf
- http://starinviter.com/ckimagefiles/fiwux.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16136909eb9d95---60431704233.pdf
- https://service-panev.com/userfiles/volunixabilujoj.pdf
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132b2f3878ac---50019070055.pdf
- http://elpijisystem.com/file/70244126870.pdf
- https://civilkontroll.hu/uploads/file/40511322978.pdf
- http://stainless-faucet.com/uploads/htmlupload/files/ganetalotukalekekel.pdf
- https://fleschimmo.lu/userfiles/files/borez.pdf
- http://lotusromeo.fr/app/webroot/files/userfiles/files/76222166488.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ca6e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA6E | 16792 bytes |
font_01_sfnt_off0000e285.binf8148d3b06ec523f3a4566eff208110491db57cb263bf77771ba55334dc90e3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE285 | 10760 bytes |
font_02_sfnt_off0000fb43.bin7f291371be1f31c1f36d10904437a8a23ecdeebab34f16d2f23f380d11a72a46 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB43 | 17636 bytes |
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