MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The ML classifier and ClamAV heuristic strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.Trojan. The PDF contains a link farm pointing to multiple disposable hosting domains, a common technique for distributing phishing pages or malware. The presence of numerous external URIs and the compromised CMS upload link farm heuristic further support this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
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 http://banphimchuot.com/userfiles/file/xetidusonepijofadu.pdf
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16092ff962eac7---dufepiwuganilani.pdf
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5ef3c6aaa---65773824797.pdf
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c01ab5a0252---gimewoposapere.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160982615ed2f3---ravevew.pdf
- https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/p8avleglom52limnho73odh0fc/40195548567.pdf
- https://chambres-hotes-aube-bleue.fr/userfiles/file/jakuxitimetebojigobunigur.pdf
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160874319b7869---75137908400.pdf
- http://bettynblue.com/upload/fck_img/20210608/file/wirewubavekumozonibuvonux.pdf
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/5610c95c3e9b209e92bdb7c8605236dd/57892774001.pdf
- https://webtechnocrats.com/upload/file/romafuxuzu.pdf
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6fc93ab799---fememejemotakeripapimodiw.pdf
- http://sclifeguards.com/clients/16854/File/ziropixekeja.pdf
- https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/pi7pqc8j16s6bt11h7unqlqm7a/48319856295.pdf
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607580c4c6056---vapejemamaximizovafe.pdf
- http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/65212799696.pdf
- http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/boket.pdf
- http://naturallabs.fr/userfiles/file/vasulelikevibejesezafe.pdf
- http://dentalclinicbangalore.com/uploads/fonobajak.pdf
- https://securityguardsupply.org/php/uploads/file/97024102219.pdf
- http://unnatiwelfareorganization.com/ckfinder/userfiles/files/50660498899.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=pintail+whydah+finch
- 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_off0000f176.bind4d7d481a6266c1ad0118b010a11fe4229e51bb87ae91765ebe3c38b18ddf0d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF176 | 10256 bytes |
font_01_sfnt_off0001086a.binfbb02838b0d3af7c938335d0f1f78d5ac3b5186a1457cc178e1dad6b1f9a4117 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1086A | 17844 bytes |
font_02_sfnt_off000137a4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x137A4 | 16792 bytes |
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