MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS upload directories or disposable hosting, suggesting it functions as a link farm. The presence of embedded URIs, including one pointing to a raw IP address, further supports the attack pattern of directing users to potentially harmful external resources. No scripts were extracted, but the overall structure and heuristic firings strongly suggest a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
Heuristics 7
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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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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/20210502233629905.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5975467c8---38473765053.pdf
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2fc55cbb1---polimukexirewe.pdf
- https://purevdavaa.mn/uploads/ckfinder/files/70651855438.pdf
- http://nano-vip.com/ckfinder/userfiles/files/58339231236.pdf
- http://rund.cz/UserFiles/File/46257655172.pdf
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d62de8d56a4---12799169547.pdf
- http://kennedy-jackson.com/clients/f/f7/f78508644b517540cdb1549d93860f53/File/zinevotepapinipusazabo.pdf
- https://almuhja.net/ckfinder/userfiles/files/jiwifoguvifobavuza.pdf
- https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/11a98097c1a3ca63e18ba6d9d57f7e11/70650296156.pdf
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c452209b320---10234181590.pdf
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/a0b6db5ba979c45b7d2d986afffcd5d8/vomoda.pdf
- https://anfauglir.com/images/file/zitalusaludewadebu.pdf
- https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/59240eea22f95995aeb5957523393df9/91442410431.pdf
- http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609626a13b729---tadexorilasaz.pdf
- http://bogelaipigeon.com/upload/file/95088735019.pdf
- https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/d97fe7beeacb74fe2bf3539320dde588/3841797625.pdf
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/285smuvoa4639tqfpkut19o2ft/84311376458.pdf
- http://hz-karavany.cz/ckfinder/userfiles/files/79337479261.pdf
- https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/424d00e514cbe3879c469732e5ae0066/97021218179.pdf
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c84c2c02aec---zekivupizotelero.pdf
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c41d22a8faf---25461256996.pdf
- http://wecans.net/_UploadFile/Images/file/favevabatesasewinexezoku.pdf
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/2de53464da8bb6350b897f21c17ba073/37360311263.pdf
- http://mai-colle.jp/userfiles/file/9149325779.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=best+co2+dragster+designs
- 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_off0000d813.binf913a3c79fafc0ffed98524bcfc0e80e7c0a4fd375cdb90aff1e304c322337e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD813 | 10672 bytes |
font_01_sfnt_off0000f08a.bin9bc07c34080f6b76762d0a5b47a489155fa999f8bd22b8dfc61d9933c69eb551 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF08A | 17148 bytes |
font_02_sfnt_off00011d77.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D77 | 16792 bytes |
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