MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. It includes numerous links to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious destinations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9722
Heuristics 7
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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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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://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b0fec83d253---21956095091.pdf
- http://abacusnancy.com/userfiles/file/xuvalutipuduvasono.pdf
- http://czytamzezrozumieniem.pl/userfiles/file/96715875963.pdf
- https://mfdesign.hu/files/file/35250347095.pdf
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/e63qt0bpn4anedbu52npsi5h07/62580774351.pdf
- https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/a24539b41d0037a4367fc553e5956049/28327760841.pdf
- https://anfauglir.com/images/file/ralipo.pdf
- https://pasarangroup1.com/contents//files/kupigafewakivupupe.pdf
- http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a8f07d2e4a4---22101818186.pdf
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c9a4c828961---2991111788.pdf
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16082d7bab11c5---guwopefag.pdf
- http://come2menorca.com/images/file/mufalukufofutajexugosuj.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/f3c305309ad73224b4ff7be11b2d69a0/libiz.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2d79578e7a42319d237d53033395f6a9/65515147275.pdf
- http://santiagoporter.com/js/ckfinder/core/connector/php/files/dikobasawa.pdf
- http://ahchala.com/img/file/sobodexasobesenofu.pdf
- https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a73f85dd077---12795671668.pdf
- http://precedent.by/_newsite/images_from_html_editor/file/98962587435.pdf
- http://hiace-yoshikawa.com/js/upload/files/maxojesosumawobo.pdf
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/8f8040e052b57ea956669f2847ff8da8/poberedanosepedunesugi.pdf
- https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/f0f2ef568135d387f72327d39ec1848c/85275897357.pdf
- https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/910d242925922c53298f980a4468aceb/lewamibu.pdf
- http://diamondsnspurs.com/clients/12200/File/kitibakepalum.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=correct+meaning+of+enormous
- 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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off0001630d.bin942a66e58048a219267c116ec3b8d560948b0c741e3df99c5b9d70d2f2ce612e |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x1630D | 23752 bytes |
font_00_sfnt_off0000feb4.bin90decd85614ab5b9045fb0c46682b45c7e5ad7300b1a74a92c043d0635ceccbc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEB4 | 32868 bytes |
font_01_sfnt_off00014a42.bin3e85dbe0018ef3756ba7218a4202301071b550f14b23eabeec9dfba313f2e885 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14A42 | 10764 bytes |
font_03_sfnt_off00018ed6.bin41394dfcacf5f7755403b54accb33167c7e8ed5b1656c5d34bc7dfc22d980a66 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18ED6 | 6408 bytes |
font_04_sfnt_off0001a504.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A504 | 16792 bytes |
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