MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites, likely serving as a distribution point for further malicious content. The document body is heavily obfuscated and contains no readable text, suggesting its primary purpose is to host these malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f3de0d610b---72878114344.pdf
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160945b18b0e0a---bokopasofezofur.pdf
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/1mkpj47uaa269s1emhphk0v856/36802882004.pdf
- http://mckeoughfamilyreunion2021.com/clients/b/ba/baf9e6b347377fae0abe5a87436fc4cf/File/84600823224.pdf
- http://velo.hu/UserFiles//file/22631516756.pdf
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/b188abf5b64576eb1ef795c9ce35e575/51477033828.pdf
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a52e201b7d6---77152322260.pdf
- http://shqinze.net/admin/upimg/file///tusonosaxusozev.pdf
- https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087f6fb9422d---74818224983.pdf
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7ac058a35---rigukanowudufuwojamaxox.pdf
- http://bienbao.org/uploads/files/42284891882.pdf
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082dd7aac596---76149617091.pdf
- http://pttaccounting.com/userfiles/files/metivi.pdf
- https://rajatotogroup1.com/contents//files/gutolurirotebu.pdf
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/53e18e18413ff27c7cf702896f15d64b/jezasuwo.pdf
- https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1607d36891c8de---vexubejilufepezufujekul.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/8089fe3789f89883ff98551e1672b119/82175631466.pdf
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757cb9cd3ef---topimupuz.pdf
- https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/a97c86f342076fcb3a136ed2af1c0b3e/datepesajojivaj.pdf
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aeb3a0061a---51625609489.pdf
- https://auto826.com/uploads/files/71465704760.pdf
- http://broorybulldogs.com/clients/33993/File/73543158096.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=equity+vesting+meaning
- 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_off0000eae6.bin71b9ce69ff05c5c35cc737b9b656ecb65cd5234dfd70eae11174305f1e488670 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAE6 | 20536 bytes |
font_01_sfnt_off00011f40.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F40 | 16792 bytes |
font_02_sfnt_off00013757.bin9d0a7324c91f12e1a9d6d86d2bbd62e3e3c5780247e14ffe74b4421ccb05a0a8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13757 | 10592 bytes |
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