MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, embedding numerous URLs that lead to compromised websites or disposable hosting, likely for phishing or malware distribution. The presence of 'utm_term' parameters suggests an attempt to track user engagement with these lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://smidgel.ru/uplcv?utm_term=free+uc+pubg+mobile+generator
- http://studioguatta.it/userfiles/files/84393625332.pdf
- http://didaconcept.com/admin/fckeditor/file/tovolusobawebizano.pdf
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16141d76201a89---42339342760.pdf
- http://sghscsjamarai.org/guruhargobind/userfiles/file/jitefiwogaperedevuli.pdf
- http://familiegravesen.dk/ckfinder/userfiles/files/xaxetajaru.pdf
- http://etalentlink.com/uploadfile/file///2021091601140395.pdf
- http://dastone.ru/userfiles/file/fojej.pdf
- http://vouchertiket.com/airplane/ckeditor/uploads/files/20035592366.pdf
- https://safarekhoob.ir/basefile/safarekhoobir/files/riburufa.pdf
- https://ofly.om-digitalsolutions.cn/upload/files/sisijelokunizalopawevug.pdf
- http://thangmayedex.com/webroot/img/files/22244057828.pdf
- http://www.nena-artspace.com/ckfinder/userfiles/files/vikegatanipuw.pdf
- http://olsztyntransportmedyczny.pl/userfiles/file/zazerezufasagomaxim.pdf
- http://daejonggyoyc.com/userfiles/file/20210913092910.pdf
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/f560fea4d3d65b31249772d762954c08/4886583025.pdf
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161416a2957170---81274748550.pdf
- https://beauty-full.ru/uploads/files/jikovegivofo.pdf
- http://viethanit.vn/hinhanh/file/57380442651.pdf
- http://asr-net.ru/uploads/files/mawufodozuvewuxuxega.pdf
- http://anthonyjcincottalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/77345087904.pdf
- http://bishnutoursandtravels.in/userfiles/file/55318407053.pdf
- http://bpsstudio.hu/uploads/19364398948.pdf
- http://www.tobywells.org/media/fckdir/file/38962411722.pdf
- https://hilanguage-com-tw.triangle-design.com/files/89215897326.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_off0000c7c4.bin57335034811b6d6367241cd231ea408ab135c457397073b98f01bbdf021b5da2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7C4 | 16732 bytes |
font_01_sfnt_off0000f375.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF375 | 16792 bytes |
font_02_sfnt_off00010b8c.binb44e47c7618c0c7175fdcd3ae0d4dddd37e405454a4d07768ae6f813eaddd5d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B8C | 10764 bytes |
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