MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. Heuristics indicate it functions as a link farm, pointing to compromised CMS uploads and disposable hosting, with many URLs containing 'utm_term' parameters suggesting SEO manipulation. While no scripts were extracted, the PDF structure and URL patterns are consistent with phishing or SEO poisoning lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9903
Heuristics 6
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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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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://fogathajtohirek.hu/fckfiles/file/vuxevefegotisopasok.pdf
- http://studiorapizza.it/userfiles/files/30198456420.pdf
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210912042553.pdf
- https://chandrakantmusicacademy.org/ckfinder/userfiles/files/xuduwituparixuvoxad.pdf
- https://micsys.in/userfiles/file/zigovafolusag.pdf
- https://protectname.xyz/whoisprivacy/userfiles/files/23751374505.pdf
- http://namjapizza.com/app/webroot/files/tibadixa.pdf
- http://preiswerte-unterkunft-papenburg.de/mediapool/59498118710.pdf
- https://lolakarimova.uz/ckfinder/userfiles/files/vamazatu.pdf
- http://apluskleaning.com/admin/images/file/jebifixolosepikuzedazorax.pdf
- http://fixafilm.se/userfiles/file/88944354267.pdf
- http://aotwresort.org/ckfinder/userfiles/files/59898398555.pdf
- http://sro52.ru/uploads/files/duvunosi.pdf
- http://ippon.lv/uploads/File/madefapuseguxagakakura.pdf
- https://karapinler.com/calisma2/files/uploads/jopitexatekibodekexede.pdf
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/7b8df4823c7160721bc5dbe1e079db0b/50232104768.pdf
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614b36d206b0d---novovilofikozulodu.pdf
- http://edeins.com/userfiles/file/divipepivaxemuxevoxuxamu.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/2c9ea14116e208def6364eca4f5d3ca1/76268187462.pdf
- http://loaamtran.com/files/usersfiles/files/2806963775.pdf
- https://monyetjoget.com/contents/files/vujiwuvixagenuvodazixuru.pdf
- http://phatnang.com/media/ftp/file/34748571106.pdf
- https://olterus.net/contents/files/sajorozexajakakisilow.pdf
- http://rracc.com/file_media/file_image/file/komojanuxadikadajufegez.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=pei+irukka+bayamen+2021
- 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_off0000bd14.bin09aa95f9fb2abd313c792c0f9b4c89fb1bef8231dd39456249925ead3d82b4a6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD14 | 18980 bytes |
font_01_sfnt_off0000eedc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEDC | 16792 bytes |
font_02_sfnt_off000106f3.bin26eb1b1d69798f578e14a81e9c5b0b64823c430d352ddae24fb072d0f18b374f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106F3 | 10580 bytes |
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