MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised CMS upload storage, suggesting it functions as a link farm designed to redirect users to potentially harmful websites. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
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://crysiq.ru/uplcv?utm_term=dead+trigger+1+mod+apk
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/ca3f1c17911b42e606c5b441a648eab7/7512619936.pdf
- http://perfectionistpaintingnj.com/ckfinder/userfiles/files/60463876639.pdf
- http://recuva.kr/upload/fck_img/1631286364/file/79214318850.pdf
- http://chi-kara.net/Upload/files/buriv.pdf
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613295ac7d854---juwilumoxufubidoj.pdf
- http://sahrugs.com/userfiles/file/3531085225.pdf
- http://worldtile.net/jangheung/userfiles/file/veziviwebimilum.pdf
- http://mayphatdienngocquang.com/media/ftp/file/91006519660.pdf
- https://webmakler.org/userfiles/file/53384241729.pdf
- http://seattledesis.com/fckeditor/file/16440247514.pdf
- http://xingyeknitting.com/userfiles/files/75522053205.pdf
- https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c98c5c1565---xotupezutelijoworewe.pdf
- http://labsshop.com/d/files/79197533513.pdf
- http://ewhamd.net/upFiles/ckeditor/files/40317769296.pdf
- https://basisangka.com/contents/files/21725432604.pdf
- http://etalentlink.com/uploadfile/file///2021090414460712.pdf
- https://kolkatanagariksammelan.org/ckfinder/userfiles/files/xasedaluteg.pdf
- http://himalayakebab.irafbrothers.com/shipinc/userfiles/files/revejidalazariwin.pdf
- http://associatedreclaimed.reclaimedoils.com/userfiles/files/67166722543.pdf
- http://roberlo.cz/www/files/file/fukureporas.pdf
- http://air-con.ru/upload/files/69908505624.pdf
- https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/fc19f3e25493e776fe18c5043412c965/67046947259.pdf
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132d42d24f32---reromenaxepopivap.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16143a2aedab17---29718410223.pdf
- https://coastalstudio.com/images/main/file/78479993352.pdf
- https://kluchar.net/klucharnet/images/file/91502842840.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b43e.bin4e9179b6b2a41b508518870bb948126985ea3d41122d55ddbf961cf374f616fa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB43E | 10560 bytes |
font_01_sfnt_off0000cc26.bin2d5ccefa73f0eb261004fcd6ef64119a5067a7d917123203327af9f4f31e27fa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC26 | 17448 bytes |
font_02_sfnt_off0000f704.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF704 | 16792 bytes |
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