MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories. These links likely serve as a distribution mechanism for further malicious content, potentially leading to phishing or malware downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9922
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://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160be36bae08dd---zujederiga.pdf
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba608a51e8---penek.pdf
- https://royal-art.pl/uploads/userfiles/files/87779194134.pdf
- http://bjaimama.com/data/upload/2021/06/file/202106242233338515.pdf
- https://tradingphrases.com/userfiles/files/gosomakefukusejaxaga.pdf
- https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16079bd725dbff---92166745124.pdf
- http://maihome.hu/admin1/file/39274645724.pdf
- https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/16ae021ea19ad32177d3db856491215f/69937604883.pdf
- https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095af7b19894---zebotugudubodidiniseve.pdf
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609d583a8651b---74386371401.pdf
- http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/wizoxokipu.pdf
- https://al-farh-iq.com/upload/userfiles/file/12903656845.pdf
- http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/5ccpqbh42miqqvl1kg75mpl6up/tegatedopopekexepezifowo.pdf
- http://nguyenthaotech.com/upload/files/nitixoverirefun.pdf
- http://derma-dts.de/files/file/lirikasaxuxinu.pdf
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/djic4t61kuslp5bfej85nl14d9/27840428869.pdf
- https://almondzwealth.com/administrator/imagetemp/file/41802190006.pdf
- http://edanieltour.com/FileData/ckfinder/files/20210601_5CFF34B6E983729E.pdf
- http://massageindex.nl/images/uploads/88720008727.pdf
- http://longchimvac.net/app/webroot/uploads/files/41285158688.pdf
- http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160794138aae99---54142826254.pdf
- https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/3b1bb8b6958af8161e477fc9305530b8/zoligetogapusegi.pdf
- https://virtualpulse.eu/UserFiles/file/rakakisorolawe.pdf
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/6d146f8ef44a1bbb161f5fcd19d93241/rikagirexufo.pdf
- http://bright-mineral.com/uploadfile/file/2021052301081373.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=words+to+describe+a+water+bottle
- 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_off00012168.bin652d99c31fad9a6e94285b654cd084dafea44378569a9b000ecfa587805a4df9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12168 | 17840 bytes |
font_01_sfnt_off00014fdc.binb6c152cb732e0814ee8cbe9fc99d3f529df56741bc8bb27db38aecb53b0b0a05 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14FDC | 10476 bytes |
font_02_sfnt_off000167da.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x167DA | 16792 bytes |
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