MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document's purpose is to trick users into downloading a password-protected archive, likely to evade security gateways. The presence of numerous embedded URLs, many pointing to disposable hosting or compromised CMS uploads, further supports a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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 http://herium.net/FileData/ckfinder/files/20210715_23D4FF0B7F4752E6.pdf
- http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/e793a58247a107dcb008186a4f0e6ef9/58656095152.pdf
- http://2ds-creations.fr/userfiles/file/68566111968.pdf
- http://hankyunget.net/userData/board/file/92861691634.pdf
- http://elite-nails.pl/Upload/file/81455388141.pdf
- http://ecohouse-lab.de/userfiles/file/vapozofarafiteluvavatije.pdf
- http://messtores.ca/fck_user_files/file/tetusose.pdf
- http://maasmartcity.com/userfiles/file/gewavisimijoruvavevof.pdf
- http://ajtoablakcentrum.com/_user/file/xozavuregizobevawuba.pdf
- http://konferencii.org/web/uploads/assets/file/newobujifod.pdf
- http://auto-spec.ca/fck/file/42140661588.pdf
- https://beruanglucu.com/contents//files/35661075427.pdf
- http://ztkammer.at/uploads/file/wajibuzu.pdf
- http://domplus.su/userfiles/files/25026995160.pdf
- https://binarbaidservices.com/public_html/userfiles/file/xiwitiditudop.pdf
- http://ats-dz.com/userfiles/file/zivowukaxit.pdf
- http://superpart.com/files/turik.pdf
- https://hitourkorea.com/FileData/ckfinder/files/20210718_8C460C778ACF121B.pdf
- https://www.ideaklinikizmir.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082f28b6a19c---favazidezilokuzikaro.pdf
- https://blogsma.com/files/16947150958.pdf
- https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/pi78dkdjfoo89g62748rhtjc37/limanekozotititeduluwug.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=formulario+para+el+ingreso+a+la+preparatoria
- 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_off00011d41.bin12771fc053c94fff5d9da3eb325cb91aaa60d71f681386d1c3791c5c63eee3ba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D41 | 10672 bytes |
font_01_sfnt_off000135aa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135AA | 16792 bytes |
font_02_sfnt_off00014dbc.bincffa8397d1a8cf121d929c8418a17dab42ce89ba973d6b602a9e7e38b1972892 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14DBC | 19168 bytes |
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