MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS uploads. The presence of numerous URLs, including one with a 'utm_term' parameter suggesting tracking, points towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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://huntic.ru/uplcv?utm_term=nova+premium+apk
- http://tubelessons.net/cms_images/file/lijifewife.pdf
- https://agros.net/uploads/file/33085415237.pdf
- https://middletonchambers.com/ckfinder/userfiles/files/53856527943.pdf
- http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161426ce2d8865---mitosivuzamomile.pdf
- https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/82452398722.pdf
- http://elektro-galerie-hamburg.de/userfiles/file/nuzotinovirumoxodenuked.pdf
- https://thefencedocumentary.com/adminfiles/file/tejoxodubexuruw.pdf
- https://gtijsr.com/userfiles/file/26440184003.pdf
- http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161348a1033513---74307442591.pdf
- https://ladymamashop.com/uploads/files/202109260517578083.pdf
- http://fkhd.cz/data/img/lefebulivogizogobesa.pdf
- https://stiff.pl/ckfinder/userfiles/files/wigizozeja.pdf
- http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16149d7eb8fded---pobif.pdf
- https://fo-prefectures.com/pages/files/nuverovelowirezo.pdf
- http://saga.diamonds/uploads/ckfinder/files/41943418543.pdf
- http://webinaris.eu/ckfinder/userfiles/publics/files/99018981412.pdf
- http://123dvere.sk/files/file/dedixifowewetiliwotetewi.pdf
- http://nghieuphong.com/upload/files/wenisodonax.pdf
- https://cihangirhotel.com/upload/ckfinder/files/rekoxawotu.pdf
- https://perfumes.dropship-tracking.com/userfiles/files/38401045372.pdf
- http://somsit.com/ckfinder/userfiles/files/sopidudosalenalufoxokika.pdf
- http://automsystem.com/UploadFile/file/20210919085216630.pdf
- https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/60266462606.pdf
- http://www.astmalek.cz/obrazky/file/89012816919.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_off0000b186.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB186 | 16792 bytes |
font_01_sfnt_off0000c99d.bin5552f4f62c6ca0fb7e3eb1010f5bf6dcbbda4b2ff9d4b9b72a7d2be08e57fb4e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC99D | 10232 bytes |
font_02_sfnt_off0000e099.bin80fcaead274741d05a84af39fee87805d95ac594c1263fccf3de703ee43836d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE099 | 17240 bytes |
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