MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress upload directories, suggesting an attempt to host malicious content. The heuristics indicate an advance-fee scam lure combined with a remote-support tool pretext, aiming to trick the user into installing potentially unwanted software. The ML classifier and ClamAV detection strongly support the malicious nature of this document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 9
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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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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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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://crysiq.ru/uplcv?utm_term=best+remote+control+software+for+android
- http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613241119cb20---mogazolazovarofo.pdf
- https://redac.ch/upload/55974310585.pdf
- http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tifevojuluruga.pdf
- http://hcbarrett.com/user_area/file/nilutezajotejimajug.pdf
- http://kco.su/userfiles/file/26627415821.pdf
- https://henseltech.cz/userfiles/file/pogipisonizemuwatigo.pdf
- https://alley.52886.tw/uploads/files/48700212961.pdf
- http://billedbutikken.dk/articlefiles/file/17197202770.pdf
- http://quimis.org/js/ckfinder/userfiles/files/58552649830.pdf
- http://aroma-es.red/yamituki-n/uploads/files/13535198469.pdf
- https://akonis.ch/userfiles/files/89208126108.pdf
- https://ccichn.vn/data/upload/file/goworivowukur.pdf
- http://thietbiantoanttk.com/uploads/files/53007550988.pdf
- https://badeluxe.com/userfiles/files/37834571586.pdf
- http://ats-dz.com/userfiles/file/kepogeketot.pdf
- https://cqc-material.com/app/webroot/userfiles/files/82218632172.pdf
- https://hashtag.school/userfiles/file/pevirikubuselikepow.pdf
- http://himalayakebab.com/shipinc/userfiles/files/64331190798.pdf
- http://tai-yang.tw/taiyang/upload/file/84135437949.pdf
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/148b555d8ee73f22afebe97c45d37568/49162913327.pdf
- http://polishingmarblefloor.it/userfiles/files/retovatinutaguvenitezi.pdf
- http://synfarm.com/upload/files/81856266739.pdf
- https://bloc-immo.com/images/67640322630.pdf
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/4612d443f30746e529a4798961036b03/56153854422.pdf
- https://retrofitoman.com/ckfinder/userfiles/files/94138746512.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_off0000e823.bin70328e4663f49682f3f8a7c48cb3996a8804134015564a4b9fb3aff01c29e2d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE823 | 10776 bytes |
font_01_sfnt_off00010107.bin7069c3fca666bf5844a557a721f12ee7abaa696d4c4b2b7749fcc15556fab32d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10107 | 17108 bytes |
font_02_sfnt_off00012d4b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D4B | 16792 bytes |
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