MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting it is part of a link farm designed to distribute malware or conduct phishing attacks. The document body, though partially obfuscated, includes a title related to 'Permutation questions with solutions', likely a lure to entice users to click the embedded malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://wastran.ru/uplcv?utm_term=permutation+questions+with+solutions PDF link annotation
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/83c9e117b9bf210d1e8f0241f7cdbaf5/53925949202.pdfIn PDF document text
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/2e82198f966e789245b2c69bbb0223e9/51927361733.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a4fe36c1f---62575937453.pdfIn PDF document text
- https://kisikana.hr/userfiles/file/6098328560.pdfIn PDF document text
- http://pileshoppen.dk/userfiles/file/84507355948.pdfIn PDF document text
- http://cnzgks.com/userfiles/file/%5C/gojunoki.pdfIn PDF document text
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf1036e972---25030147119.pdfIn PDF document text
- http://praguetransfer.com/files/file/miradebaboselixogekumupa.pdfIn PDF document text
- http://jamesirvinewedding.com/clients/f/f9/f947a18657f5d77a8fcd192ffd4ccf25/File/lovesizobazabivone.pdfIn PDF document text
- https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/4c6785c6e318977453a50ceb8abb66e7/31323221563.pdfIn PDF document text
- https://schmitz.cz/res/file/56615812195.pdfIn PDF document text
- https://agermag.ro/mm/file/96986557192.pdfIn PDF document text
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160788b82f03d7---59995004069.pdfIn PDF document text
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/df8cefa92d17ca9824e37e203e130354/dogipadisolejepeluroku.pdfIn PDF document text
- http://mispuntossaga.com/campannas/file/29947853148.pdfIn PDF document text
- http://msinziniering.com/userfiles/file/27542593041.pdfIn PDF document text
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c26cd150d4---53153402132.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_off0000dc89.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC89 | 5144 bytes |
SHA-256: be5dd66779b19b16c4bad55f244a1391e602230bb2e4fbc38c4caff4c7eecea4 |
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font_01_sfnt_off0000eded.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDED | 11740 bytes |
SHA-256: 8b2101aa96d02a2743dfcfd859130c8c945894079bea3380c19c395dbaba85fa |
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