MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The PDF structure and embedded content indicate it's likely used as a lure, possibly for phishing or to download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://4x4autok.hu/userfiles/files/begekejurig.pdf
- https://aspaeng.com/files/image/files/xilodog.pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/mnel8lrehm376jvv0k079nkcp4/81979892773.pdf
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16091ab4d06178---75050048360.pdf
- http://angelescare.com/userfiles/file/43783457590.pdf
- http://polskienarty.pl/data/aktualnosci_imgs/file/xalugazewugenam.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8b281f4f1---6133544556.pdf
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/7sfjdc1739c4t9pmjngk517b75/makigeja.pdf
- http://kfnmdg.com/upfolder/e/files/20210626074948.pdf
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607760407c332---58488106779.pdf
- https://mmszke.hu/files/file/95859288373.pdf
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/ed083df54d1a0bc910839603c45d4479/72936954959.pdf
- http://jullien38.com/ressource/site-image/files/fokuzosutivodesabezeb.pdf
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607422d391c4a---4832472293.pdf
- http://lucann.com/Upload/file/9064669362.pdf
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a1997d2ad4---supebawovamik.pdf
- http://baraanduliaptti.org/userfiles/file/zabavukuxewidabukejomek.pdf
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4daa93641c---12417772890.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16072f004180b3---genulumenumenepob.pdf
- https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/a5243241330440100a2f3b1c5191f3e6/61330793795.pdf
- http://www.puhito.hu/uploads/vixezusigiderabefo.pdf
- http://bjbtrh.com/files/pic/file/85608206042.pdf
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/55954f1d8815307207e271c080c8bf7f/94169222125.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=look+like+yourself+somebody+else
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/43a6d2b0a60f37f3500c762874cadc59/wumavabipige.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_off0000e6a1.bin56bd11275a889685676e6e06580749c56571c8429343c71309acc1b7ccbf3f97 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6A1 | 10556 bytes |
font_01_sfnt_off0000feb9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEB9 | 16792 bytes |
font_02_sfnt_off000116cb.bin19f8e226de2066fc33d2673e1eb5bfe69a9dd96aa3d63590f4121d6af69f2e73 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116CB | 24136 bytes |
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