MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document employs a common social engineering tactic by masquerading as a download link for a 'General microbiology book pdf download'. The numerous external URLs, many hosted on compromised WordPress sites, suggest a link farm designed to redirect users to malicious content. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://pistant.ru/uplcv?utm_term=general+microbiology+book+pdf+download PDF link annotation
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/o234mkha4lvrpqetau21h6kdm0/dozevigofibuturugomifuzaf.pdfIn PDF document text
- https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/tkd6kn1vn2tq7q9651kevn58c3/ninuku.pdfIn PDF document text
- http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/vf43q569762v3p6vdn27rf8na4/ripanujigaxu.pdfIn PDF document text
- https://uleiuri.ro/userfiles/file/92296919398.pdfIn PDF document text
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/0l9n5alcippe526ea478c2k150/sokumelobugabojupixub.pdfIn PDF document text
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b1fcee24d9c8efd06a628f7e3024b416/bivemedizilalewofedajoto.pdfIn PDF document text
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/uv9acg5l7rs61mo9eob5k56aq0/taxavagoxizirazarobamofuz.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5448f20b3---welasipujafenan.pdfIn PDF document text
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16077ba81d253f---72745776685.pdfIn PDF document text
- http://eltonltd.ru/sites/default/files/uploads/65402341991.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/e30ec9ee26e8937c46883f9b8b5134f1/66396090558.pdfIn PDF document text
- https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a64e5006945---79383658202.pdfIn PDF document text
- https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/l9fatb9rak2hs9gvupmag1pn0h/69258775491.pdfIn PDF document text
- https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/fhv1slr34a6o6ob4cev5mfg4ob/xutenugegibizi.pdfIn PDF document text
- https://uniqrelation.com/userfiles/file/nudorixusamezomodudodo.pdfIn PDF document text
- http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/6njfic99d7e144m7jl16to4ha0/34988515235.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001460b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1460B | 5724 bytes |
SHA-256: 2af631d0694ab86ff1b79f480096039f31b64815ffc90484eda2cfac230de4e1 |
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font_01_sfnt_off0001598d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1598D | 12680 bytes |
SHA-256: 103644c920f73a7c0022505d1fe8d88f480d3eb72d2f57236339e33bc145f95d |
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