MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to numerous external URLs, many of which are hosted on compromised or disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to delivering a secondary payload or redirecting users to malicious sites. The document body is heavily obfuscated and unreadable, providing no direct user-facing content but reinforcing the suspicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://automsystem.com/UploadFile/file/20210507000506238.pdf In PDF document text
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/6vr4915seo8o1cp70k0hll7p1k/diman.pdfIn PDF document text
- https://living-stone.lu/userfiles/files/75307023717.pdfIn PDF document text
- https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/35ij0v73fdb27elrpkjnp0ndm7/sovoj.pdfIn PDF document text
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d68e360ba1---banimulokigikazareb.pdfIn PDF document text
- https://cursosadistanciayonline.com/medios//files/53655874993.pdfIn PDF document text
- http://zerosquareonline.com/file/fexujefofup.pdfIn PDF document text
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/p33rfuvjlr47d8b0vdp1afvpt1/1171868412.pdfIn PDF document text
- http://studiolaviano.it/userfiles/files/fiperifaxakesegotupe.pdfIn PDF document text
- https://mides.vn/images/ckeditor/files/dotugubulakifej.pdfIn PDF document text
- https://o-dance.com/upload/files/miguf.pdfIn PDF document text
- http://ninda.vn/userfiles/files/lopaxajadi.pdfIn PDF document text
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbc459ae7ce---suvojamujimosakoga.pdfIn PDF document text
- http://a2itsolutions.com/chop/multimedia/userfiles/file/pudizonovidixilerisos.pdfIn PDF document text
- https://ahreco.com/uploads/news_file/pifevivaserodasewifaxoti.pdfIn PDF document text
- http://pospatrans.cz/UserFiles/File/dowelidijex.pdfIn PDF document text
- https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/3062221685.pdfIn PDF document text
- http://yuqiaohome.com/uploads/files/202108291311058151.pdfIn PDF document text
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c98fa77fcb---gitikemufazusogodelipalon.pdfIn PDF document text
- https://tideandtigers.com/ckfinder/userfiles/files/sazizis.pdfIn PDF document text
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/olkp7lvpr8jo59ccd249tqqrb1/68334834027.pdfIn PDF document text
- https://pemaboutiquehotel.com/assets/userfiles/files/bowuparotejovusuvuletek.pdfIn PDF document text
- https://pypconsultores.mx/userfiles/file/5685215568.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=phase+3+vowel+digraphsPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d3bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3BC | 17716 bytes |
SHA-256: 1da34a34177ccb962b3cefd3d89a8435aeeabdbad5b6f5abd158fc5106903263 |
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font_01_sfnt_off00010198.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10198 | 10792 bytes |
SHA-256: 016fe9001a4e92260190068176195ff1fd6aa24be38c351ec87cc6479934be07 |
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font_02_sfnt_off00011a68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A68 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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