MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users. The 'SE_CALLBACK_LURE' heuristic indicates the document may be attempting a callback phishing or tech-support scam. No scripts were extracted, but the presence of numerous external links suggests an attempt to lead the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://wastran.ru/uplcv?utm_term=basecamp+tablet+android
- http://zhizhencn.com/filespath/files/20210910030917.pdf
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/161408e905a627---79975000584.pdf
- https://hattoco.vn/images/ckeditor/files/65429399168.pdf
- http://ildongwire.com/userfiles/file/fodafewezuseminupoviwi.pdf
- http://soupworld.de/upload/file/17193469005.pdf
- http://frutapac.com/ckfinder/userfiles/files/kalolo.pdf
- http://obraz-tlt.ru/userfiles/file/39744265293.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/740fd9d9a4f2933408d355b1f2e797ee/54168195049.pdf
- http://paradoxine.com/upload/files/45292270075.pdf
- http://dush-kz.ru/uploads/fck/file/savaxuwexitutubudikatu.pdf
- http://jsdarvin.com/files/87262148656.pdf
- http://ricoconsultingattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/medanasojob.pdf
- https://tiemhoamo.tiemhoahaibara.com/data/dulieu/files/66812669020.pdf
- http://ideal-site.ru/userfiles/file/pirunukonobobaju.pdf
- https://ingatlanfelugyelet.hu/uploads/file/kudirevevo.pdf
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614bddfa268a2---woxadirajixafu.pdf
- http://hoshitorionline.com/uploads/files/87431789094.pdf
- https://signos.larrialdiak.es/files/galeria/files/furivilufapisorewu.pdf
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139f93fd0f89---79884716001.pdf
- http://www.detskaoptika.cz/ckfinder/userfiles/files/roviwenazubobafo.pdf
- https://dom4m.by/userfiles/files/bufosogelibaxuj.pdf
- http://mediedil.eu/userfiles/files/gojivejegi.pdf
- https://unitjaya.com/contents/files/64514739738.pdf
- https://pediatricpotentialsnj.com/PP/PPpng/files/tewawugilodifuwawori.pdf
- http://diakmelo.hu/ckfinder/userfiles/files/vibejularogisofiz.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_off0000ebf7.bin562a7ffc63bfbc87ecc41f16db47db3d1e0f8d570f9e6636de9bf285fa3ea7fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBF7 | 19116 bytes |
font_01_sfnt_off00011d2b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D2B | 16792 bytes |
font_02_sfnt_off00013542.bin461a86a73d7750fb58342f5d39482cc2c9a0597ba7a412ea8397ae4ad698ea52 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13542 | 10868 bytes |
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