MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple distinct, potentially compromised or disposable hosting domains. The presence of numerous unknown URLs, many hosted on suspicious subdomains or using form-upload plugins, strongly suggests an attempt to distribute further malicious content or conduct phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 http://zulassungsdienst4you.de/bilder/file/pomafo.pdf In PDF document text
- http://vln.nl/files/file/fegap.pdfIn PDF document text
- https://detmers-kontejner.hr/files/50429011115.pdfIn PDF document text
- https://dynasty888.com/image/files/20210913_114812.pdfIn PDF document text
- http://canoeing.by/pics/files/22899224922.pdfIn PDF document text
- http://planbmedia.hu/files/dixolijezepuril.pdfIn PDF document text
- http://hawaii-resort.info/images/blog/file/vofatesanekusixosiwunuxol.pdfIn PDF document text
- https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614345f52c3c9---megebiwivulonuxuvem.pdfIn PDF document text
- https://goooinggroup.com/userfiles/files/20210901_211451.pdfIn PDF document text
- http://aroma-es.red/yamituki-n/uploads/files/ripojajifaziter.pdfIn PDF document text
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612e9b96b76f0---rofenaxiwu.pdfIn PDF document text
- https://galedo.cz/www/data/cms_files/files/26586475148.pdfIn PDF document text
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/2214c96154a7897591faab1207d276ce/fuwozepewisetelomo.pdfIn PDF document text
- http://dreambeauty.kr/upload/fckeditor/file/64075359551.pdfIn PDF document text
- http://himalayakebab.irafbrothers.com/shipinc/userfiles/files/tevatamibitifafu.pdfIn PDF document text
- http://xn--hazrdner-r4a10d.com/alisveris/yollanan_resimler/file/mesufanijexizenuzodavew.pdfIn PDF document text
- https://ecohort.info/userfiles/files/41790732256.pdfIn PDF document text
- https://mldom.xyz/web/img/podborky/files/lusigovikufomutew.pdfIn PDF document text
- http://fillaracingacademy.cz/ckfinder/userfiles/files/xolusi.pdfIn PDF document text
- http://viral-list-monster.com/ckfinder/userfiles/publics/files/damajumelatujaz.pdfIn PDF document text
- http://chelseafoodmart.com/uploads/files/vomusuw.pdfIn PDF document text
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/a2c7176a2ac01acc835f146c6037edd8/lajatodonipumif.pdfIn PDF document text
- http://www.thaitofu.com/image/upload/File/81757569872.pdfIn PDF document text
- http://pcwenhua.com/uploadimg/file/16304758271279417454.pdfIn PDF document text
- http://nyitotthaz.hu/userfiles/files/67674175270.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=fully+reset+android+phonePDF link annotation
- 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_off0000d0ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0AD | 17736 bytes |
SHA-256: 071f9e23ed3fac842b750651ee68d5b6591b822e60671b3237721d8e84b679e4 |
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font_01_sfnt_off0000fe24.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE24 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001163b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1163B | 10680 bytes |
SHA-256: 7108accf95fbc6246d9f8b5a5b59dde65fe8e0aadb4d73b410858526db64947a |
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