MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics indicate the PDF contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting a phishing or malware distribution lure. The embedded URLs and the nature of the heuristics strongly suggest an attempt to redirect the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9913
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://huntic.ru/uplcv?utm_term=audacity+manual+deutsch PDF link annotation
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/e0003caa6ac22f07b327d77e660536a6/kejibetuna.pdfIn PDF document text
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611c461abfadc---dutawafevadir.pdfIn PDF document text
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/a91a6925fce55698d33f2102fe8931ef/19656114982.pdfIn PDF document text
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/4cabb7e833b03572494cbb03941b8353/pijofefetofuvo.pdfIn PDF document text
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b32654a7bb---kedebivesupo.pdfIn PDF document text
- https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/ont43om6d1dnaqd149tif375he/dazutozawobuve.pdfIn PDF document text
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16091277852cb1---pupizogowa.pdfIn PDF document text
- http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16090f46b41d19---26712076424.pdfIn PDF document text
- http://vvk-wiedermann.at/userfiles/file/76911525517.pdfIn PDF document text
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/e849b8aa550c32e488a4a723ad4c497b/68727566193.pdfIn PDF document text
- https://angkortaxiservice.com/userfiles/file/noloselo.pdfIn PDF document text
- https://drsoleimani.ir/userfiles/file/sasivemirinutavare.pdfIn PDF document text
- http://saovietgroup.com/upload/FCK/file/43288193907.pdfIn PDF document text
- http://intersonik.eu/upload/files/25819013561.pdfIn PDF document text
- http://bogelaipigeon.com/upload/file/sokelenajubi.pdfIn PDF document text
- https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/17a0c649dba7e1a65c328815370d9b57/26143781644.pdfIn PDF document text
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/24f2ce24e464467bd9830f61c1a70b41/zifepuxilepodemaxuxasod.pdfIn PDF document text
- http://agro-pasz.pl/ckfinder/userfiles/files/nujofurut.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f87d176b861---91992339215.pdfIn PDF document text
- http://skyline64reunion.com/clients/e/ec/ec378541aa9b73e2b99de5ca5545ec21/File/domulunuvipafives.pdfIn PDF document text
- http://babyindex.nl/images/uploads/nikotawonopesuserupizador.pdfIn PDF document text
- http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b0a20e44a---92837283535.pdfIn PDF document text
- http://jrmhandling.nl/upload/file/83648031371.pdfIn PDF document text
- http://olversonfamilyreunion.org/clients/5/51/51a48c89da211807e19ed56f8a1a1822/File/rozaj.pdfIn PDF document text
- http://townofwinslowin.com/flash/townofwinslowin.com/file/48678703054.pdfIn PDF document text
- http://humanlitech.com/files/files/4457641024.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_off0000f898.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF898 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000110af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110AF | 10612 bytes |
SHA-256: 3941121947e484f27b9620d2f92c8fd92af432099f776f0595ad458d717731d5 |
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font_02_sfnt_off000128bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x128BF | 21240 bytes |
SHA-256: 00712e0895dce321cc8e42d280764141e3a05a40db98fc90e37bb762ec50bcb1 |
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