MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or SEO poisoning campaign. The embedded URLs, while numerous, do not directly indicate a specific malware family, hence 'unknown family' is used.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 http://hglobaltour.com/FileData/ckfinder/files/20210605_18264C87963837DD.pdf
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c74ff97351---mofewir.pdf
- https://dintek.eu/uploads/file/43385288811.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5fb041e553---42781768789.pdf
- http://asztalosweb.hu/userfiles/file/tedarawozakatoxutakodiv.pdf
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609617829563b---83339886072.pdf
- http://www.findvoters.com/userfiles/file/9028699081.pdf
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b180c870c99---46397635291.pdf
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0858bcdf4d---54497106811.pdf
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/lhuf1dacjlksiktdc6v3k7gvl7/vifakisududubinokuwas.pdf
- http://www.findvoters.com/userfiles/file/davenefaz.pdf
- http://folientastaturen.pl/_data/file/tupel.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/eb7f9236acb384ad6fd47861e30e9831/zokusekenurukarafuxidibos.pdf
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/1lmnb38cmn3pvn2bv2mlvm4a47/1720518346.pdf
- http://songiadahoaian.com/upload/ck/files/86306693302.pdf
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d79cc0690---29476283957.pdf
- http://btc-ltd.com/upload/file/tatazopevodoki.pdf
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d219dfc09fb---48837877338.pdf
- http://chaodontuonglai.vn/uploads/ck_upload/files/nekekiburesasumiwigazinir.pdf
- http://5m-tti.com/uploads/image/files/tezubozek.pdf
- https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/47rbnsggg9dqhb2k0nqi1qoeuf/41009580677.pdf
- http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160863a68403c7---vejoforo.pdf
- https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/bba0ddc5be01b2f179a71f6bb1c08a76/70247271879.pdf
- http://kolesnikov.pro/ckfinder/userfiles/files/jasupakamajege.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=what+is+the+difference+between+discrete+and+continuous+probability+distributions
- 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_off0000e120.bin31b316ae50b46173a3185bc1c0e6f5f493f3968940384e213085fa2425d4e19f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE120 | 18228 bytes |
font_01_sfnt_off0001116b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1116B | 16792 bytes |
font_02_sfnt_off00012982.bin36a42bb1cad4d1bd34d0560f5a871b16db7292b45cf05c9e8ae20267b818689b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12982 | 11148 bytes |
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