MALICIOUS
236
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is likely a lure for an advance-fee scam, aiming to trick users into downloading further malicious files. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 8
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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 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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Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LUREDocument contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
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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://queure.ru/uplcv?utm_term=skype+for+samsung+galaxy+s
- https://onecre.com/images/content/files/31258591320.pdf
- https://tekdalyapi.com/upload/ckfinder/files/68909718939.pdf
- https://basisangka.com/contents/files/73733233433.pdf
- http://hotelpenza58.ru/ckfinder/userfiles/files/mevedesal.pdf
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/f33016160356a3b1d122f67fc33b8e49/ronefiridisufananu.pdf
- http://dc-42351dc5a6b3.prshots.es/uploads/userfiles/1630493241/files/gupidofenagajufiwazejeziv.pdf
- http://messtores.ca/fck_user_files/file/97195494802.pdf
- https://egca.fr/userfiles/file/feduwigepi.pdf
- https://bahceneryaman.net/public/content-images/files/mixonubakegewur.pdf
- http://iuoooo.com/filespath/files/20210901042809.pdf
- http://guanzhuli.com/userfiles/file/47716986456.pdf
- http://naasschoolofmotoring.ie/fckeditor/userfiles/file/64052884775.pdf
- http://hodinovysoused.cz/upload/file/97275286062.pdf
- http://tythb.cn/uploadfile/files/52436281108.pdf
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cc0b12483e---69715843982.pdf
- http://fecoil.com/userfiles/file/vofog.pdf
- https://mcq.bmtinhoc.vn/InteriorWeb/images/images_news/files/lulijefabe.pdf
- http://houselandia.ru/files/fubimapitelilibikaveremo.pdf
- http://favourtec.com/attachment/file/bunerutusoxepeloduboloki.pdf
- https://kaowei.tw/image/files/20210913_024727.pdf
- https://ruta.hu/ckfinder/userfiles/files/15169038091.pdf
- http://www.alfapilates.pl/upload/file/dorada.pdf
- http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/liwojemofazir.pdf
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/161381993cd724---77649089116.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_off0000e014.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE014 | 16792 bytes |
font_01_sfnt_off0000f82b.binfb01d7d8e72ff1bba86f285c7d45513ee0ec59a810a2feb9530a4058f23bb082 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF82B | 10996 bytes |
font_02_sfnt_off000111c0.bine50b2c0159bf3b5a8db41535c17303b3df78305d63dece294da7203e40ce7eca |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111C0 | 17696 bytes |
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