MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, many pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious link farm designed to lure users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://crysiq.ru/uplcv?utm_term=usmle+step+1+first+aid+q%26a+pdf PDF link annotation
- https://lesura.net/userfiles/file/tegefalilugivib.pdfIn PDF document text
- http://speaklifeiamgreatness.com/files/files/jarunewozusapufomilut.pdfIn PDF document text
- https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/1adeed42b6cfa51bfed6e8f199583b80/47801186779.pdfIn PDF document text
- https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/d01u99gkn50562gsj50gtb6su2/feburiwokitesowovufe.pdfIn PDF document text
- http://strandedtattoo.net/file/dajezezatawetufuzusis.pdfIn PDF document text
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c8325e143---83851731734.pdfIn PDF document text
- http://asr-net.ru/uploads/files/56183081054.pdfIn PDF document text
- https://keongracun.org/contents//files/18256375585.pdfIn PDF document text
- http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160e4b8ecc1d3f---63710409748.pdfIn PDF document text
- https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/9004db198ea90f51f503fb8c963de8d0/nisoginitupekalijaju.pdfIn PDF document text
- https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/6004235b35706927ec187c7f316c7798/18023495717.pdfIn PDF document text
- http://www.alex-vasilkov.ru/images/wisdom/file/rufanogeniduniwoger.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/68e6e0e0b59a9705c11318c4c6e47ca4/teninidawipajo.pdfIn PDF document text
- https://holocaustresearch.pl/nowy/photo/file/7571799196.pdfIn PDF document text
- http://olsztyntransportmedyczny.pl/userfiles/file/vumugokananetijobo.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610d63132093a---33372273885.pdfIn PDF document text
- http://abwva.com/uploads/files/94098235102.pdfIn PDF document text
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/789f9c037d72f9e4a7c94a2bf979d2d6/dokafufebizawizaxi.pdfIn PDF document text
- http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bc843450a2a---mafunebijefovenuba.pdfIn PDF document text
- http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/nvjnip2k5mbspb8uhlhgnjugm2/japobovusamupukex.pdfIn PDF document text
- http://agendaalzheimer.org/files/galeria/files/95939023789.pdfIn PDF document text
- https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/0c1739a996b41eb74041804e062574a5/4069953301.pdfIn PDF document text
- http://truhlarstvisollner.cz/data/file/20695659169.pdfIn PDF document text
- https://investkwik.com/userfiles/file/2246552094.pdfIn PDF document text
- https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/1262497eab94cac8887115050730b8cc/zosoj.pdfIn 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bd3c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD3C | 16388 bytes |
SHA-256: f054749cafbfd231f608c9f0e2113c793a865a4cf50fa060e995403696f2e088 |
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font_01_sfnt_off0000e752.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE752 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ff69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF69 | 10640 bytes |
SHA-256: 4c69dffc0133e346ad8c5b94b84defdeeb8998dfa028ffbd7810615a91d5c1d0 |
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