MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal the PDF acts as a link farm, directing users to multiple external websites, many hosted on compromised CMS uploads or disposable domains. The presence of numerous URLs, including those with 'utm_term' parameters, suggests a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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 https://krisoc.ru/uplcv?utm_term=fuel+and+combustion+book+pdf+download
- http://kxnjl.com/userfiles/files/kumebigorom.pdf
- https://starbox.fr/img/files/kanowadomalevejufenamitu.pdf
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16070ebb0afcf1---14043573335.pdf
- http://15fratrowreunion.com/clients/2/2b/2b18ccadde375fd95e9ac2d5db5aaa67/File/68538839472.pdf
- http://ned.ru/uploads/files/26452096765.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a380d56c88c---fuwovolotije.pdf
- https://esprimagroup.com/userfiles/file/nozifumuzizinalep.pdf
- http://crmrealty360degree.in/userfiles/file/40360288609.pdf
- http://maytinhtuyenquang.com/home/maytinhtuy/domains/maytinhtuyenquang.com/public_html/images/file/86813943741.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092de68bed6b---58511282531.pdf
- http://www.northern-japan.com/image/upload/File/90742009880.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1606d00899e270---97210451056.pdf
- https://www.creativetalentnetwork.com/ckfinder/userfiles/files/31527043008.pdf
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160847fb651769---gozixukom.pdf
- https://rubenferro.com/userfiles/file/36298357664.pdf
- https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/26db3a444219c9c9785acb336db79676/12035464370.pdf
- https://aduanaldelvalle.com/userfiles/file/zepurixerofim.pdf
- http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9d7293f92---70125442219.pdf
- http://ambulanceservice.pl/userfiles/file/33527322949.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/403b415717e9540ef129e560bbf16ee6/kofitaririvamuzojop.pdf
- https://ekoelprom.pl/public/images/editor/file/jusugewogitojupuwuwavikik.pdf
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ddcb97e5c0d---javosagiwebipozisatapar.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_off0000d01d.bin6861e1f45b0076bc46906a8307c1ba9432e1ee62bc2187c2785c6d58b32156e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD01D | 11076 bytes |
font_01_sfnt_off0000e9b7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9B7 | 16792 bytes |
font_02_sfnt_off000101c9.binf6d749bbda0b534ecfbcf8b717464366e9c36493629d87b4fa8bd92835a36f51 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101C9 | 16628 bytes |
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