MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to manipulate search engine results. The document's content, including the title 'Objective pet student's book with answers pdf download', suggests a phishing or scam attempt to trick users into clicking malicious links. The presence of ClamAV detection and ML classification further supports its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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=objective+pet+student%2527s+book+with+answers+pdf+download PDF link annotation
- http://ehoron21.mn/uploads/files/xavileseliveresiluf.pdfIn PDF document text
- http://sartor.ru/upload/files/tekeze.pdfIn PDF document text
- https://acronimocostanzo.com/userfiles/file/12354525749.pdfIn PDF document text
- https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/14f8cf1ef98d26bc8252930799ec34ec/90833003997.pdfIn PDF document text
- https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/4fa7fdbc432437437fd47dbfb35e304e/46452577216.pdfIn PDF document text
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160abd128dfb20---loxaxijiwosewulivupelefel.pdfIn PDF document text
- https://actor-conseil.com/files/file/leridopezudarinasusi.pdfIn PDF document text
- http://rheinmotel.com/userfiles/file/4223133928.pdfIn PDF document text
- https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/6bs8ev4pgvv7cm09103ri30p11/mowusesijisironikunopiz.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160857ca4a2ea3---27284379027.pdfIn PDF document text
- https://alkalacarservice.com/public_html/userfiles/file/79571220047.pdfIn PDF document text
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609251f239274---46668271053.pdfIn PDF document text
- http://arcdesantmarti.com/biocop/Images/images-editor/file/fosudawari.pdfIn PDF document text
- https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/2665e4da8a53974811a3108bae5d91d5/fekotaxoxirowifogurapeg.pdfIn PDF document text
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/5216ca14c040e12b92b67c479882ec7d/wujet.pdfIn PDF document text
- http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac419f34ceb---vaferufujajumakokaduvel.pdfIn PDF document text
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082ab2facc29---83579707978.pdfIn PDF document text
- http://amuseonline.com/absite/userfiles/file/40944365055.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_off0000da2b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA2B | 5736 bytes |
SHA-256: e4e128da291577b09e0b1fa7b975380d0d5943b6718430299b1de936736747d5 |
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font_01_sfnt_off0000edce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDCE | 13228 bytes |
SHA-256: ab4594f11a66868352aaef524f53a75743b4855d4a709aaad682cab41f166f3f |
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