MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters suggests a phishing or spam campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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=campbell+essential+biology+pdf PDF link annotation
- https://ambalatender.com/upload/files/fijedakalorulokos.pdfIn PDF document text
- https://schmitz.cz/res/file/zevidik.pdfIn PDF document text
- http://hanasushimenifee.com/uploads/files/91846089270.pdfIn PDF document text
- http://theemasternetworker.com/ckfinder/userfiles/files/verivazomolobokili.pdfIn PDF document text
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613979d0a20d2---44313569033.pdfIn PDF document text
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161385c9f28251---sudegubevajat.pdfIn PDF document text
- http://pastoret.it/userfiles/files/rolofozafulosadiduvidex.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/09c9f228d0db311a74107a2fdf9f66e0/vekej.pdfIn PDF document text
- http://op-gold.com/ck_image/files/gukilomazupilivanusut.pdfIn PDF document text
- http://parejalecaros.com/adjunto/upload/fck/files/topeluzitelebozijov.pdfIn PDF document text
- https://greenboo.vn/uploads/files/tijunugepuzokibolelamoxa.pdfIn PDF document text
- http://chronocertif.com/userfiles/file/61181192108.pdfIn PDF document text
- http://kvarkeno56.ru/userfiles/file/78409270502.pdfIn PDF document text
- http://fiumevivo.it/userfiles/files/5460236457.pdfIn PDF document text
- https://autotronics.vn/userfiles/file/7201193753.pdfIn PDF document text
- https://tyko.pl/userfiles/file/71504075665.pdfIn PDF document text
- http://ediliziaunoaventi.com/userfiles/files/32335446415.pdfIn PDF document text
- https://mcq-exambd.com/app/webroot/ckfinder/userfiles/files/rigisazipubimifividotajij.pdfIn PDF document text
- https://manorhair.com/uploads/files/202109071026322097.pdfIn PDF document text
- https://nezrenweb.com/calisma2/files/uploads/dowobeko.pdfIn PDF document text
- http://a-b-i-s.net/layout/bilder/file/52586601063.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_off0000ce98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE98 | 17480 bytes |
SHA-256: d096b2570c34cef9806501be37a24c6cd02d81d7c14bd0becd3b0243967080ee |
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font_01_sfnt_off0000fbcf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBCF | 11028 bytes |
SHA-256: ddd46ff983a3085b770622c7026b8380162f383d42e8b26318e98e2fff8160de |
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font_02_sfnt_off0001150e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1150E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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