MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Numerous heuristics indicate the PDF functions as a link farm, with many embedded URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to lure users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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://brukbet.com/user_images/file/65105045721.pdf
- https://aduanaldelvalle.mx/userfiles/file/88027335383.pdf
- http://holidayinntorino.com/userfiles/files/simiwazefuboduzafopakumos.pdf
- https://zweefvlieg.net/userfiles/file/40218522656.pdf
- http://stolizstekla.ru/userfiles/file/4684915188.pdf
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160863146ef2ca---gorajojadutolimexe.pdf
- http://curry-box-deluxe.de/userfiles/file/48702229563.pdf
- https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/6b2279f3bea01c8a18101df2db4c5a2e/54489253125.pdf
- http://autohondl.cz/userfiles/file/15642528979.pdf
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e0337b17d---18096731824.pdf
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160753fe9b3ee3---mavazunuzupaja.pdf
- http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fff318181f---tizewe.pdf
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf832c5dfba---33648245720.pdf
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/80fa7af7cb068103e1f4d257f21890da/xosidoka.pdf
- http://www.aluvascientific.com/UserFiles/file/16987667889.pdf
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/a2b306368e66c91a22633bfc14eb3a9a/80581292267.pdf
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/9a5e06f19fec5ea52c2759b5f1b89ca7/sizeraxibavowo.pdf
- http://cjandjunemillerfarm.com/clients/75830/File/31509607070.pdf
- http://bpsstudio.hu/uploads/7174701526.pdf
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/545bd5cc04f0e89ba870e5ab605e64dc/66361204539.pdf
- https://ideylia.fr/uploads/file/44247419399.pdf
- http://appartenvue.net/appart/upload/images/60204836106.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=riser+is+used+in+a+sand+casting+to
- 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_off0000e967.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE967 | 16792 bytes |
font_01_sfnt_off0001017e.bind4c9ef2ebc7f0e9950d2ba45b0dd767744c8036977f688d623f1d01f631f266c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1017E | 10644 bytes |
font_02_sfnt_off000119c8.bin2779def7570f597c176936d5e62412202e5d95a4450a2e71346f2aa903c918a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119C8 | 17212 bytes |
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