MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic further support this, indicating the PDF is used to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://crewmak.ru/uplcv?utm_term=clear+cache+on+this+device
- http://sovaimm.it/userfiles/files/wudomaxagi.pdf
- http://marinapogon.pl/upload/file/33857130135.pdf
- http://xtra360.net/campannas/file/baxesijezipewokogepod.pdf
- http://improntediteatro.it/userfiles/files/tadaj.pdf
- http://badgerhillfarm.uk/49663153002.pdf
- http://www.bargiel.com.pl/ckfinder/userfiles/files/niwojetaworoxovazarenumo.pdf
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613394144ac99---zowajefifabifumo.pdf
- https://wroclawmodelshow.pl/ckfinder/userfiles/files/puzanibak.pdf
- http://bookblog.kr/data/file/files/53205641132.pdf
- http://lehnerkom.de/images/uploaded/file/92062801207.pdf
- https://pirkitpadangas.lt/ckfinder/userfiles/files/56713689684.pdf
- https://agrando.cz/files/file/zizijozigavud.pdf
- https://xn--b8qxb801j.tw/upload/files/5196879094.pdf
- http://coinproject.com/userfiles/image/file/89314249440.pdf
- https://ostrichtours.com/ckfinder/userfiles/files/9411737047.pdf
- https://acgroupenterprise.com/userfiles/file/75948948295.pdf
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/4v8o1qh8hg1f7o2lkharmgbdcg/90528438043.pdf
- http://skncn.com/u/files/daxeb.pdf
- https://www.pelicanfinancialnetwork.com/ckfinder/userfiles/files/50141898313.pdf
- http://tc-antey.ru/uploads/files/41121647547.pdf
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f946424c20---xigepanifojukixofuwewew.pdf
- https://mehreganimaging.ir/images/upload/files/loxag.pdf
- https://hahapediatric.com/uploads/files/202109081428006231.pdf
- http://checopharma.com/upload/files/50529742406.pdf
- http://bjyhyy.cn/filespath/files/20210912031720.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_off0000dfdb.binb5ebcda8bf382f18183ad52586d9b080ef56b55da1462985680e7bbddfd2c983 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFDB | 17732 bytes |
font_01_sfnt_off00010d7a.bine4183f5bd52070cf34bfd68d25d4965de03037c34cba4350a127005004e437b1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D7A | 10564 bytes |
font_02_sfnt_off0001258f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1258F | 16792 bytes |
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