MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other domains, likely serving as a distribution point for further malware or phishing content. The presence of multiple compromised CMS upload links and SEO-focused disposable links suggests a coordinated effort to host and distribute malicious files.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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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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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 http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160710353a70f9---nuzarowada.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160a88e4a36200---pejetalizonagarapakim.pdf
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098e96ca5b7c---88003243646.pdf
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4c1f12eb1---78031324849.pdf
- http://446888.top/userfiles/file/47775735220.pdf
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2ddb07c94---36631360460.pdf
- http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/bg8jp0kboggnq8f79jum7uoit1/sokepazulexupigedidud.pdf
- http://stepsforstarlight.ca/clients/c/c6/c668404594a1c08d975ab50c7bec58f6/File/42806387105.pdf
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/khar5irh6ecoe1fan8mue2ogc3/datarulewen.pdf
- http://findmecakes.com/userfiles/files/7365845269.pdf
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dac528704d0---43847965673.pdf
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a28334e2790---8423875167.pdf
- https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/7avau66vt1lhqgq9rpabcmmr1g/kinaniperawebujixaku.pdf
- http://xn--aknmedikal-yub.com/uploads/file/kidoxofed.pdf
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa0fd7c4bb---52813714955.pdf
- https://kcharp.com/ckfinder/userfiles/files/bivixekewosewelo.pdf
- https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cba40acdb---85691218725.pdf
- http://alpinedelhi.com/userfiles/files/72954193433.pdf
- http://dienmattroigiasi.com/uploads/files/vobupodas.pdf
- http://a-kamen.com/userfiles/file/dexobibajoketo.pdf
- http://icmasistemas.com/userfiles/files/73131454685.pdf
- http://leebyenghun.com/new/upload/board/files/72520960867.pdf
- http://masonhn.com/d/files/31806478113.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=candy+crush+android+1
- 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_off0000eef0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEF0 | 16792 bytes |
font_01_sfnt_off00010707.bin701653f50d90886ecd9a6ff348b96a52f58c35455f830385d6ee9d57e7806bd6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10707 | 10488 bytes |
font_02_sfnt_off00011eda.bin67550d95aab32e10efd53ab3dee777ae04fb80dee273a583c5f9e7420cb3a0c3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EDA | 16840 bytes |
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