MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains numerous embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The presence of a link farm and a QR code lure suggests an attempt to redirect users to external malicious sites. No scripts were extracted, but the overall structure and heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 7
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://chcial.ru/uplcv?utm_term=beyblade+burst+app+geist+fafnir+qr+code
- http://nhatminhtrading.vn/app/webroot/uploads/files/resaxepefakomewolimikik.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/161358f1240f9d---23598523628.pdf
- http://alrehabourhome.com/userfiles/files/90530205445.pdf
- http://nanouklid.cz/upload/file/58617836778.pdf
- https://stmarys-perthamboy.com/upload/File/98212486735.pdf
- https://profitaler.com/UserFiles/file/vuferarefe.pdf
- http://knx-shop.ru/admin/ckfinder/userfiles/files/84973904603.pdf
- http://uni-soar.com/userfiles/file/jobinozagoda.pdf
- http://think6.net/ckfinder/userfiles/files/20210904083131.pdf
- http://flyingfish-stay.com/userfiles/file/ruvumifix.pdf
- http://lignumweb.com/site/webroot/uploads/files/nizuwovipevudobitijo.pdf
- http://sgpeo.pl/users/file/rigakulu.pdf
- https://pediatricpotentialsnj.com/PP/PPpng/files/71763921176.pdf
- http://www.urbanwaterways.info/files/77349479289.pdf
- http://huucodatlanh.com/userfiles/file/funutejafefaxufipudi.pdf
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/p78n68vpvoj0uctjk20rrd770h/88662171063.pdf
- https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/546ac9efaa26ae08c64bd4940fa7c33b/41731053092.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/a4e6316274117cafd17b7b371e323719/muwetetixaroge.pdf
- https://staging-info.sharkovinkom.com/sharkovinkom.com/ckfinder/userfiles/files/powabobodedizilofos.pdf
- http://yuanhebiotech.com/upload/files/kujetotadogono.pdf
- https://takipcisec.com/calisma2/files/uploads/pujezokemirigagefub.pdf
- http://schturman.ru/files/files/53320931002.pdf
- http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/79323060907.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_off0000bc0e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC0E | 16792 bytes |
font_01_sfnt_off0000d425.binc5d776983537213077373cba761f06875cf58667b9d231e9e0dafa8be319e149 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD425 | 11348 bytes |
font_02_sfnt_off0000ee4d.bin4a803c13cd1cda720deccc8c969f9f44f3dbe85e0d81f9fdc690bd5c26e255f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE4D | 20384 bytes |
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