MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate the PDF acts as a link farm, directing users to compromised websites and potentially disposable hosting. The URLs extracted suggest a phishing or malware distribution campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/4d40e48b2bdc9784e5720de3bd00e251/4414274080.pdf In PDF document text
- http://konditsionery-reutov.ru/upload_picture/file/xagosowoxaretelunepepo.pdfIn PDF document text
- https://casalindasbakery.com/ckfinder/userfiles/files/mewanomosolowalegixe.pdfIn PDF document text
- http://www.css-jp.com/upfile/files/2021/07/28/suvezasibopirabuxut.pdfIn PDF document text
- http://itkaufmann.com/images/fckimages/file/nonadamidujosilabebu.pdfIn PDF document text
- https://techson-cctv.com/upload/file/remifojowekizupu.pdfIn PDF document text
- http://stacjaregeneracja.pl/userfiles/file/palakizomubawugawigagawir.pdfIn PDF document text
- https://pima-alarms.rs/slicice/file/43526396242.pdfIn PDF document text
- https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/rt2tknn6dhtkoute0radpg517a/xikoba.pdfIn PDF document text
- http://polskienarty.pl/data/aktualnosci_imgs/file/53120842855.pdfIn PDF document text
- https://kltccompany.com/ckfinder/userfiles/files/80174181296.pdfIn PDF document text
- http://stonebreaker.at/38779405051.pdfIn PDF document text
- http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0eaea442f0---17028669649.pdfIn PDF document text
- https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/893a234d1b206ce693fcb96f89238c2c/83195672933.pdfIn PDF document text
- http://bienbao.org/uploads/files/suririsebowuxabaji.pdfIn PDF document text
- http://poslovniimenik.net/firme_data/files/68717874836.pdfIn PDF document text
- http://indagosrl.it/userfiles/files/tasuxodavevosotoxusasor.pdfIn PDF document text
- https://mariellatriolo.it/public/file/raliz.pdfIn PDF document text
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/39e55f2f8ff6143ab94fcf1820c21336/rixojowemige.pdfIn PDF document text
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/936f5e4ab81019d3e1cb3211ef7f8498/98936138281.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=manually+uninstall+office+2016+for+macPDF link annotation
- http://zs.tom.ru/jsplugins/ckfinder/userfiles/files/mugeki.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_off0000d853.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD853 | 17608 bytes |
SHA-256: 9d565ea55c4f369981f11c581ee68bfc32dd44539a388f5890a94d83e70a1b27 |
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font_01_sfnt_off000105d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105D7 | 11164 bytes |
SHA-256: def0bafe08e7182788ebef9510be041a2aa7b061447d69a38bbe10cbefa9ff32 |
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font_02_sfnt_off0001201d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1201D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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