MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was identified as malicious by a ML classifier and ClamAV, detecting it as a phishing trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to external PDF files hosted on various domains, some of which appear to be compromised or disposable. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using such domains for link distribution, suggesting a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9922
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://xn--lenachatka-57b.pl/uploaded/file/51724826045.pdf In PDF document text
- https://sarna-zapiekanki.pl/ckfinder/userfiles/files/daweminugogawika.pdfIn PDF document text
- http://dichvubaove.online/upload/files/tufufaxinezonugekanus.pdfIn PDF document text
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/161449e7219d10---67378971246.pdfIn PDF document text
- https://rtvpuls.com/ckfinder/userfiles/files/490481688.pdfIn PDF document text
- http://kruengrangthai.com/files/files/82886269497.pdfIn PDF document text
- http://avvolodin.ru/upload/file/sajufejinirupog.pdfIn PDF document text
- http://nicolalazzarotto.com/userfiles/files/jofijuzaw.pdfIn PDF document text
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/0871cd9cefda71dd3747b2dc54be8180/69310664881.pdfIn PDF document text
- http://chizclean.ru/files/fck/file/5433793410.pdfIn PDF document text
- https://kibledergisi.net/resimler/files/popigedemebuginimagir.pdfIn PDF document text
- https://sklepbonus.eu/userfiles/file/zonajigavuzobaxosezi.pdfIn PDF document text
- http://bumsnab.ru/uploads/files/nepikoxefukisazakarat.pdfIn PDF document text
- https://laptoptranganh.com/data/dulieu/files/rowepatatu.pdfIn PDF document text
- http://agrocare.hu/ckfinder/userfiles/files/3015460438.pdfIn PDF document text
- http://pribatu.lamilagrosaimport.com/images/files/43207618073.pdfIn PDF document text
- https://playindiano1.in/ckfinder/userfiles/files/xodibevefenowotanatu.pdfIn PDF document text
- http://qhzs88.com/admin/fckeditor_upfiles/file/2021092305003280554.pdfIn PDF document text
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16141c27d994d2---kexetakelojexiluxa.pdfIn PDF document text
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141e86fe0644---2765615015.pdfIn PDF document text
- http://smsalumni1971.com/apadmin/uploads/userfiles/files/pizozanonawizusomogebeve.pdfIn PDF document text
- http://amindoost.ir/images/upload/files/44996322136.pdfIn PDF document text
- http://domoticasociale.it/immaginiNewsletter/file/83248535607.pdfIn PDF document text
- https://ketdoanbus.com/webroot/img/files/mogubabonokobopedefiza.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=online+pdf+to+ebook+converterPDF 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC18 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f42f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF42F | 10604 bytes |
SHA-256: bb3172fbc44490c66685e4a593ca8d0f42dbc58d03af19847f49165a700b8aea |
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font_02_sfnt_off00010c47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C47 | 17312 bytes |
SHA-256: 6a965ceac98a0d04934ad555414de469ad24be0a812ea0e899802755c7923d93 |
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font_03_sfnt_off00013951.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13951 | 18356 bytes |
SHA-256: 4535233fa172bc6cc75f37ee15e9827880d009a7a2942ec2835fb7f5bccd28be |
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