MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URLs, several of which point to compromised CMS upload directories, suggesting an attempt to host malicious content or phish users. The presence of 'utm_term' parameters in some URLs indicates a potential phishing or tracking campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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://irlanc.ru/uplcv?utm_term=imessage+chat+apk
- http://soles2walk.com/data/file/ninetojazifim.pdf
- https://stratasphere.online/userfiles/file/xubijexiwev.pdf
- http://skontrolsengineering.com/file_media/file_image/file/43783746863.pdf
- http://tverzhilservis.ru/foktver.ru/ckfinder/userfiles/files/miterebexafimofuzojosekun.pdf
- http://candientushinko.com/images/file/24457770212.pdf
- https://baxsporthorses.com/userfiles/file/gowegavafisesumu.pdf
- http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130dff92c7e7---30425237654.pdf
- http://protetyka-lublin.com/images/wyswig_images/file/tuvaveko.pdf
- https://stl-log.com/htdocs/cljr/data/files/98627244747.pdf
- https://hygradeinsulators.com/images/uploads/file/76548187344.pdf
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/ak27r9p1s3qtt6ismsqh0j82qi/valapizabazugezudajufavur.pdf
- http://moskvaznaet.ru/upload/files/xixerobowe.pdf
- http://bodemveenweiden.nl/bodem-veenweiden-img/kudiwekikeligupupovaw.pdf
- http://chuaphucluong.com/uploads/image/files/tovivevotimube.pdf
- https://www.gurgy.net/ckfinder/userfiles/files/71215641187.pdf
- http://dalnoboy.org/data/filestorage/upload/files/77732523996.pdf
- https://premiersuli.hu/files/files/suziwolomurufijisi.pdf
- https://hoangnhataudio.vn/media/files/ripenutitarabogufowadu.pdf
- http://zjqzzx.com/uploadfile/file/2021090816251973499.pdf
- https://mebelihome.ru/upload_picture/83373357184.pdf
- http://anm-av.de/uploads/files/67815123590.pdf
- http://yanartextil.com/firma/files/74333834728.pdf
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161321f192208a---varinawuliv.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec89f98759---rubixapot.pdf
- http://matsusushionline.com/uploads/files/47455276803.pdf
- http://oiseau-bleu-morzine.com/userfiles/file/fowetijiriterasuji.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_off0000d8a2.bin540ebbd104aee13490cbcc1a5c21e2a2690f001659910cd183358193c39ffe42 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8A2 | 10400 bytes |
font_01_sfnt_off0000f03e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF03E | 16792 bytes |
font_02_sfnt_off00010850.bine70771f8550cec31b5c6fd55760b735a754358ed173d392a21432fb633156961 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10850 | 17452 bytes |
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