MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The file's structure and the presence of these links strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://philabc.ru/uplcv?utm_term=sonnet+18+worksheet+pdf
- https://amthanhanhsangchinhhang.vn/upload/files/38329649721.pdf
- https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/livukikuwetapofegiwi.pdf
- https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/78b1f4dafa5c24b6293d859d81b1ec83/pirura.pdf
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9824ae02a7---zezem.pdf
- https://questyme.ca/userfiles/file/65367672129.pdf
- http://phantasos.org/userfiles/file/visaxexuvep.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6667bc9ffb---73486189018.pdf
- https://mps-india.com/userfiles/files/guborisu.pdf
- http://langeline.com/ckeditor/upload/files/forepazonogowilewa.pdf
- http://tiga.co.th/ckfinder/userfiles/files/21900986825.pdf
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c24ca8e3674---48991917493.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bbcafabb44---digolelakisogejorozi.pdf
- http://yossy.biz/userfiles/file/tisikoti.pdf
- http://study4student.com/cache/fck_files/file/totofu.pdf
- http://fujiya-la.com/uploads/files/kamilonagetabenofud.pdf
- http://marthomaiticherukole.com/userfiles/file/wilavelotanexokafonumog.pdf
- https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/92220d40188b9e2e41de862d08f67f8b/xobuxibulurul.pdf
- https://duext.com/wp-content/plugins/super-forms/uploads/php/files/f143dbbd4c302913f58476d7d0fa08e3/3508149885.pdf
- http://vyveva.eu/UserFiles/File/xepowupi.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/c0e69d423ae2c019bf5d3d52119b7150/wozexide.pdf
- http://rentbucharest.net/images/userfiles/zozuposuvabirijowibunove.pdf
- http://asvpp.fr/pdf/87063407056.pdf
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a672560ec08---90547399677.pdf
- https://at2-turbo-j3t.com/contents/files/sikuwefekadefagezi.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/3eb647e9432687e4f75fc45e1cd9afc7/dogexitonazobalisevajebov.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_off0000c71e.bin0a6403f0f74c7fc177e587fcbad5325581ce0e18720bd8b0b97104d4bf30099d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC71E | 17012 bytes |
font_01_sfnt_off0000f30a.bin51258a8df87395842ede0e1afe911f7156909b8ec9b9bc9ee572495d01e899e3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF30A | 10808 bytes |
font_02_sfnt_off00010c04.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C04 | 16792 bytes |
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