MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external PDFs hosted on compromised websites, suggesting a phishing or malware distribution campaign. The presence of a callback lure heuristic further supports a phishing pretext, aiming to trick users into interacting with malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 8
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/047e5def8e65ee7030c047af9c38aad0/41662648671.pdf
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608b1f2bd1505---laxefejuwibeladugi.pdf
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/9a630aa116b16f8d22f510e9e58c2231/89362681947.pdf
- http://slp61.com/clients/e/e2/e296dcecfd7d10ffef0cc83fef253c72/File/fifunufometose.pdf
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acaba0085ad---nudapa.pdf
- http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/fivagofadonuziburu.pdf
- https://cape-electronics.com/media/file/81327810970.pdf
- http://alfavit.tv/userfiles/file/sovibefi.pdf
- http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160800cb255205---zikukodofexeguni.pdf
- https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/5cda6119a8kntvvq3mnqod36m3/timumovitanujobija.pdf
- https://hissekurban.com/resimler/files/xisufipunonu.pdf
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607eac0767f75---57098122868.pdf
- http://timandlor.com/userfiles/file/mebeje.pdf
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/gposuqjnbrg7g718evgv2ftime/wiforani.pdf
- http://hiro-seiko.com/upload/files/nunob.pdf
- https://anhhuynoithat.com/asset/files/zaxezamubadutinepajaguva.pdf
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ff6c93247---23519262613.pdf
- https://alihuata.com/userfiles/file/sitoxajamogudopifukuzujib.pdf
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16083924ee4415---lovegop.pdf
- http://curry-box-deluxe.de/userfiles/file/womug.pdf
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/osrlja6kcoerpkie15lra9d9c1/jakini.pdf
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16096197626885---24300791306.pdf
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/6a706264def5dd7a9de7a9fc7851a59b/93906136746.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=frp+bypass+software+for+pc
- 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_off0000e5b8.binf19223cb46a697f5ca8c22e4c89483bb5a1c1a8f0fbd9a7a8793194cc56e762e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5B8 | 10548 bytes |
font_01_sfnt_off0000fdc6.bine46c830e0fa013db6533f6519a42e989cad04eed475711fd4f566e91aeb1f59f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDC6 | 16840 bytes |
font_02_sfnt_off00012904.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12904 | 16792 bytes |
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