MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and multiple external links, one of which is algorithmically generated, suggesting an attempt to download and execute a second-stage payload. The presence of urgency language further supports a phishing or scamming intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/74d068206af574c406f824e326219b9f/gusanix.pdf
- http://xn----itbbfrdrdbd4bgy6gi.xn--p1ai/webroot/files/files/mikitofiw.pdf
- http://king-tableware.com/uploads/files/202109071736079111.pdf
- http://honmamon-s.com/img_seminar/userfiles/file/77684145825.pdf
- http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/dodigogimigad.pdf
- http://igigeothermal.jp/userfiles/file/nuvewikuzenuwa.pdf
- http://lapawan15.com/shop/fck_file/file/12083029177.pdf
- http://irvinenott.co.uk/ckfinder/userfiles/files/20240194257.pdf
- http://hotechike.com/files/files/xikerexajobimusi.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161334e48b7a26---xitofesuwamesugazefiwof.pdf
- http://synergytaekwondo.com/click2buy_newp/userfiles/file/73050267023.pdf
- http://waterlootour.com/FileData/ckfinder/files/20210910_F468F87B250FB761.pdf
- http://muszempilla.com/files/file/sobenunu.pdf
- http://otelm4b.ru/admin/ckfinder/userfiles/files/85901001777.pdf
- http://ambulatorioveterinariocigliano.com/userfiles/files/78747710490.pdf
- http://ikuma-car.com/js/upload/files/83194577468.pdf
- http://105chers.netsociality.com/upload/files/soligolizibuxijar.pdf
- https://beruanglucu.com/contents/files/64436108454.pdf
- http://seoulsquare.com/userfiles/file/28714879948.pdf
- https://doanandieuduong295doson.vn/namthuan/images/news/files/zofato.pdf
- https://creteservices.com/FCKeditor/userimages/file/59428568306.pdf
- http://joyandwowbook.com/upload/file/kajiluzamulema.pdf
- https://aedwea.com/upload/foto/25867398500.pdf
- http://westernstudioservice.com/admin/userfiles/file/borafe.pdf
- http://szerecsen.hu/editor_up/petufebak.pdf
- http://trustarshida.co/cache/fck_files/file/37173552597.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=app+untuk+baca+novel
- 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_off0000b76b.bin58222787329acf1efc3305699acf57fe583a7af9733cfdb2569596cf3d2b2d56 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB76B | 10384 bytes |
font_01_sfnt_off0000cee9.bin0becb26d9552c08a3c54cb6d61bf5dcc32d36980ee0be88f52ae1f4bd74e477b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEE9 | 17004 bytes |
font_02_sfnt_off0000f965.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF965 | 16792 bytes |
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