MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of external links, many of which point to compromised WordPress sites. The ML classifier and ClamAV both flagged this file as malicious, with ClamAV specifically identifying it as a phishing trojan. The document body is heavily obfuscated and does not provide clear textual content, but the heuristic firings strongly indicate a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 6
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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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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.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607893cfbce1d---biniguwurupukadapo.pdf
- http://benhvienlaptop.biz/userfiles/file/tovujuzerukoxa.pdf
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160c19f8c2981b---kivexibun.pdf
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec018cdc0f---digun.pdf
- http://argyler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b3ebaf133---silowiturakapidorul.pdf
- https://zegabilisim.com/calisma2/files/uploads/73435649245.pdf
- https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/824fe6d5518884c91a0f1e5c514f3aa9/53985785870.pdf
- http://z-i-f.ru/userfiles/file/55440018547.pdf
- https://radmangroup-ye.com/rgfiles/file/83819356115.pdf
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160725ef207dbe---rosiwenirenunesur.pdf
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/7ectj02k0ubpcrhh3uq12ok8n6/bidufilavesefelaluje.pdf
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fc522afdc---kugaxa.pdf
- https://businessservicesuk.com/userfiles/file/besajiwowuvu.pdf
- https://laatjehuisweerstralen.nl/upload/file/kojafupetuvu.pdf
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/8f36920d7c17fee290f7190d184775aa/xededow.pdf
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/632fb392d955cc0e900d5c41800a57bd/21306893810.pdf
- https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/o7kb6799hrip5ta36atg2u2rs7/kilugasiribuxaja.pdf
- https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc50c610773---zuligenutilebonofepag.pdf
- https://prawobrzeze.info/userfiles/file/woserabamurozil.pdf
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab850adf292---91517187904.pdf
- https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/66572926685.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=mexican+skin+color
- 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_off0000e844.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE844 | 16792 bytes |
font_01_sfnt_off0001005b.bin437f7b445b7153fce206ec037e305dae21cfc18c0a24909f29cccdadec1a058f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1005B | 10312 bytes |
font_02_sfnt_off000117b9.bin1c54509145b5e8b9ed9045f27ba465ce615c409b9e4ffc40ae8aab0a6b54e641 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117B9 | 16932 bytes |
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