MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The file's purpose appears to be directing users to these malicious sites, likely as part of a spearphishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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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 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://laborke.ru/uplcv?utm_term=short+biographical+statement
- http://richmore.kr/uploadfile/fckeditor/file/64790454749.pdf
- http://sjhrz.com/images/upload/File/95887371018.pdf
- http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607adb3007246---15191232755.pdf
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac16a9b63c---79892853447.pdf
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/7qvpc5q0fbns2ltljjaau4q4bn/ligoxoru.pdf
- http://conomiya.com/images/uploadedimages/file/seretusupakobizudupenadeb.pdf
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/bc1f7b93309c1345ff411da6f9b561e8/7458837009.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd3f2c3ff4---kabomezubekop.pdf
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/8ea1272211c33a9134c292298f94ec7f/jizolam.pdf
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c53c36937---potekajenotejubijunubip.pdf
- https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086a2377a0af---fejawajawuwupave.pdf
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/617ad43209512802247cf17d0ace0889/21923135236.pdf
- http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2da97751c4---26185310349.pdf
- http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a81470a4024---sofuxeriketidogolu.pdf
- http://alliance-ic.ru/uploads/file/41574572009.pdf
- http://ahsaipu.com/v15/Upload/file/202152150401079.pdf
- https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/cae0bdb8e5b01909c6da6e5f9eaa361c/80809922159.pdf
- https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/297r33gqckml1262qkt37pmtp1/gerexedakim.pdf
- http://oicenglish.com/imagexx/files/10722019572.pdf
- http://abwingscolley.com/uploads/files/42026939809.pdf
- http://www.verneteco.com/ckfinder/userfiles/files/zasuga.pdf
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/c195bfc62de8b19d8e54c3ca5dfc608c/gijewubulovibexodeje.pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd4741a490---73005187292.pdf
- 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_off0001088e.binb554dcbb3039bab57187fd1ee6329e7a34281fe5f9b4e833959e0095e9f40c39 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1088E | 11036 bytes |
font_01_sfnt_off000121d5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121D5 | 16792 bytes |
font_02_sfnt_off000139e7.bin86ae11fe6b9806268f1120d00a915c49ad9709cefecd7a58b55b17815d48c93f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x139E7 | 17548 bytes |
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