MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or trojan delivery mechanism. The heuristics suggest it functions as a link farm, directing users to compromised websites hosting further malicious PDFs, potentially as part of a payment or invoice scam. No scripts were extracted, but the embedded URLs and link farm structure point towards a phishing attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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 http://uptownherndon.com/uploads/files/kijugudifopewugigagitad.pdf
- http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b784724491---zojuzejusepepelufulal.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160e605f6b3186---zakuwidogejak.pdf
- http://pkynfe.net/userfiles/file/xadezekutesefixezuja.pdf
- https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/8f788b20c720fa7c53e42b8d34604021/2296174585.pdf
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8c49049fd---64772461758.pdf
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f93dd1997e---zamokarejukemag.pdf
- https://vinniescustoms.com/userfiles/files/zivubamiwan.pdf
- https://syntellect.ru/Repository/file/72975308606.pdf
- https://rozgarnetwork.com/ckfinder/userfiles/files/45224497891.pdf
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e2036dd36---39106515795.pdf
- http://simmsfamilyreunion.com/clients/9/98/98d47f1658d09d39d77ba56043454c9c/File/vowomenegijijijal.pdf
- http://sobsai.com/ckfinder/userfiles/files/midadasigula.pdf
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/usn0sgaic3hutept119h4f9sjv/64330901324.pdf
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a87d08596044b135cce64f0a2cc35450/gewugigevakixalelu.pdf
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/dc1769cd738b1c4baf0020ceb0c8008c/kegajorolekoferujuv.pdf
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/0444e2bed38b202adcb95ef06ca0e8c6/gepifosiviwamalaguteme.pdf
- http://omg50yrs.com/clients/6/6d/6dc66c997efb3e4e8ce6e6e7d0694e91/File/99172111791.pdf
- https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/a257665c3a13647d711543df81a65a60/18408652287.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/7501d2f06b08c863bf38de37aeb6a7a6/vimedi.pdf
- http://ccswcd.com/userfiles/file/23681590403.pdf
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/j399hvs7c3bvcp0opeqarr7v31/76873112557.pdf
- http://kondicionery-dolgoprudny.ru/upload_picture/file/18481486108.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=how+can+i+download+airtel+broadband+payment+receipt
- 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_off0000df9c.bin69e4ae9a39f48f5945d5b907b6aa4069040030dc90babcebf83f2b7db8ffa7c8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF9C | 17516 bytes |
font_01_sfnt_off00010dcf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DCF | 16792 bytes |
font_02_sfnt_off000125e6.bin450f8a163ebccec9dba1c936b9e7993e6ab9410d4a5fe63f73d8933735580d20 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125E6 | 10840 bytes |
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