MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The 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, with several URLs pointing to compromised CMS upload storage. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the presence of numerous external links suggests it is designed to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161329e32949e5---xitona.pdf
- http://biosurfest.com/userfiles/files/11503045139.pdf
- https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/0f4e54362d5d0f6aebee2ff0bff7617e/lulago.pdf
- http://restokrat.info/userfiles/file/5425430954.pdf
- http://phunggia.biz/userfiles/file/xudufigamidevasoludovo.pdf
- http://peggylittlelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pudisijote.pdf
- https://danielfelber.ch/userfiles/file/basisunemilufewete.pdf
- http://gamecoast.by/uploads/files/64055537173.pdf
- http://asfalon.com/__files/file/tibotatonejo.pdf
- http://baheth24cars.com/ckfinder/userfiles/files/rubejax.pdf
- https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/75986890981.pdf
- http://anhuizpyy.com/upload_fck/file/2021-9-8/20210908005339649553.pdf
- http://kayapalinakliyat.net/file/90940254314.pdf
- http://fpempresa.cen.es/userfiles/files/93392513627.pdf
- https://relans-nn.ru/images/docs/file/32760994515.pdf
- http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/82946184305.pdf
- http://hwayinn.com/image/files/20210905_204917.pdf
- https://nbtele.com/en/cache/fck_files/file/25847568174.pdf
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132683e641f0---bixedidik.pdf
- http://moje-stranky.eu/userfiles/file/63223601269.pdf
- http://damnoen.com/ckfinder/pho/files/miwifagemorifitizoxuwut.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=paranoid+android+drum
- 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_off0000c6af.bina8dcac20a4b8dec922a74134f12f2e4185e63aff72cc96ca288a8f8812ca6f9d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6AF | 10064 bytes |
font_01_sfnt_off0000dcec.bind2fa854af4b26a71a1ee4a2fec698656c8822ac597ae33fa85c5cf738473f917 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCEC | 17516 bytes |
font_02_sfnt_off00010ac2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AC2 | 16792 bytes |
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