MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to multiple compromised CMS upload storage locations, indicating a phishing or scam attempt. The 'SE_CALLBACK_LURE' heuristic suggests the document prompts the user to call a phone number, a common tactic in tech-support scams or callback phishing. While no scripts were extracted, the presence of numerous embedded URLs and the ML classifier's high confidence score support the malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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://namlongadc.com/uploads/news/files/basirirat.pdf
- http://ottotech.center/userfiles/file/44042511968.pdf
- https://svrcontractors.com/wp-content/plugins/super-forms/uploads/php/files/c7d50918813ffcd644bb321cd44f1bb9/fuferujiwisakezi.pdf
- https://arrayamed.com/userfiles/file/rofeniporafe.pdf
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/ge5hv6t01mfcum7b2td258lul5/nopozizuzarogibopapazimo.pdf
- https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/5da71dcebf1218a4c7657dcefcf19aa3/gamuxijuxume.pdf
- http://ronniejoymemorialfund.com/clients/1/1a/1a75100f29d804137a154ca93ef51a80/File/4181631325.pdf
- https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607633705f744---fisatubosiseranodaratawe.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160784809db633---xisute.pdf
- http://ascensionchina.com/userfiles/file/23948976911.pdf
- https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/13ecfac9ca0bcf829ab4d7c9ab880b84/47382112119.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/6j5shdpebdjs1bkcdjlooc5jj2/90095859493.pdf
- https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/8f06baaf67d012b031ee220316a905aa/nuroresuremodesalule.pdf
- http://iltorg.ru/upload/file/ronaxobotodefaso.pdf
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b55bc453813---fiterurabirunorad.pdf
- http://panziofabian.hu/fck_kepek/27792485164.pdf
- https://mysmartedu.com/uploadimages/files/2263673735.pdf
- http://c2r-auto.com/uploadfiles/file/2021060307564973499.pdf
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a533bf4313b---regawotimomusawujawasusaf.pdf
- https://yepsell.com/userfiles/files/muvudoj.pdf
- https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/446e5f3801e4893b7c8a83135d0a4b86/4075389254.pdf
- http://gostinica-domodedovo.ru/files/wefakepetotafex.pdf
- http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/ddra0573mcfkcbtvq00o72cls5/ledaxaxubopiniw.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=ph+buffer+and+isotonic+solution+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_off0000f264.bin810b0adff48c61a896620129eeaaacf267f10de7bf85e832accc48a9bf2be1b1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF264 | 18064 bytes |
font_01_sfnt_off00012212.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12212 | 16792 bytes |
font_02_sfnt_off00013a29.bin7d5812e8b94c6937f0d7fefcd6abc141d4795aad1d18388570be85ca836c3f43 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A29 | 10956 bytes |
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