MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to compromised WordPress sites, suggesting it's designed to distribute further malicious content or phish users. The document body, though heavily obfuscated, appears to be a lure related to employment certificates, aligning with the 'SE_INVOICE_LURE' heuristic.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
Heuristics 7
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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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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 https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ef2db1f79---tolepujikunokarivazabeti.pdf
- http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e30cce3a38---lotigirilelatoge.pdf
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d85118908b---ferog.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/66380ead9d27d700db9a2081f36ccbbd/wulofomasorumanoxu.pdf
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/7d6dd60d4eb6d50cd30554fdb72339aa/41180712388.pdf
- https://marbellamohali.com/wp-content/plugins/super-forms/uploads/php/files/e6315635e10dd757050cb6f234d51241/24125594369.pdf
- https://hashtag.school/userfiles/file/46989886926.pdf
- http://heritagecarletonplace.com/clients/c/c2/c23aa4fb54f25340752d20cfcff880b2/File/mobujaravobugi.pdf
- https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/d17a858f8a969d9b6c25c3ad007f6e17/42581443944.pdf
- https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4c39a836d---namofusimene.pdf
- http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1607720da22385---75388453634.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9dadb402f0---64716310801.pdf
- http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160807239438da---magigerelinebixifibe.pdf
- https://seedomoretravel.com/files/files/37915946270.pdf
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16077b9b9282f2---73686155745.pdf
- http://101-games.ru/images/uploads/files/22446570121.pdf
- http://angelescare.com/userfiles/file/kitoxexumex.pdf
- https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/mp2bkc6efav5fdrcg4988h5vcs/muzipetevodemapa.pdf
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b88ba51043---nuxumevobepunuxobija.pdf
- https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/6d5c71736355e764fc3012969d64fb48/7088495124.pdf
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160d003023bab0---funip.pdf
- http://builderall.info/userfiles/file/42993697999.pdf
- http://dobrasekacka.cz/userfiles/file/fajilazezarupuxedetap.pdf
- http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/kpdvrob8so6vk034lmhacgvjr4/92144745824.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=certificate+of+employment+for+contractual+employee
- 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_off00011878.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11878 | 16792 bytes |
font_01_sfnt_off0001308f.bine93a73726c636364d3274b879262cee198b6d76af96579a0844d3bf6d2c8ae37 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1308F | 10716 bytes |
font_02_sfnt_off00014933.binae92a5a28b2b8db67b5e18c2a06bda9bd7b8c72066791bfaf5dcbd0f514d470f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14933 | 17764 bytes |
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