MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm used for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to educational worksheets, which is a common tactic for social engineering.
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://synerhu.ru/uplcv?utm_term=graphing+linear+equations+from+a+table+worksheet+answer+key PDF link annotation
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/v09dqhhcerophokjfst96b8mit/gimaxabegatubalam.pdfIn PDF document text
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160829544569d5---11330892437.pdfIn PDF document text
- http://aiswaryamatrimonials.com/fck_uploads/file/wafagerolewujigi.pdfIn PDF document text
- https://tlproduct.com/userfiles/file/85144024.pdfIn PDF document text
- https://nic-irq.com/userfiles/files/89953533110.pdfIn PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/ij4ddl5b6k2356ovp09m5c1q18/buxon.pdfIn PDF document text
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160788c419e97b---mijowituwuvekiz.pdfIn PDF document text
- http://diclenakliyat.com/userfiles/file/18793512784.pdfIn PDF document text
- http://coeb.eu/userfiles/files/2106156617.pdfIn PDF document text
- https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/7c78d42937a8973f3ac331d7f1afee2b/kidunoxekefosudaronuzazej.pdfIn PDF document text
- http://ersatzmonitor.de/userfiles/file/fadonoxosobi.pdfIn PDF document text
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16070a41e45bc6---sikuwukewixapijirod.pdfIn PDF document text
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9170494c8---86287617349.pdfIn PDF document text
- https://miaousland.fr/ckfinder/userfiles/files/wiwagirovixamugiliwabivib.pdfIn PDF document text
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/jdlo4bdvdb3mahap1k6dom6nh7/kavavadakuba.pdfIn PDF document text
- https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/5c9478a9d102e1a682b8363643d974b3/89476138345.pdfIn PDF document text
- https://etonbio.com/newsLetters/images/file/71115349371.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_off0000f819.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF819 | 5872 bytes |
SHA-256: c8e6b5ac15300f6b2a1eb3e4b88ee65297aab136662cfc79100e274c45d9b9a9 |
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font_01_sfnt_off00010c05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C05 | 12340 bytes |
SHA-256: b7f54b625a16b2cd2b006bbb23cc02d4130c95d4a64d17553cf5792031d1d254 |
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