MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and exhibits multiple high-severity heuristics indicating malicious intent. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution campaign. The malformed stream length heuristic also points to potential exploit code within the PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 8
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/13h7llisdlku5ddnhotraatq9v/ruwagejatizugopo.pdf In PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609782427b2f6---93549589739.pdfIn PDF document text
- http://aryajob.com/user_upload/file/17033320451.pdfIn PDF document text
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be40816cdd3---47570828915.pdfIn PDF document text
- https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/5ba6202d004f58d3d06fcf7588cb6a9f/suvawero.pdfIn PDF document text
- https://holocaustresearch.pl/nowy/photo/file/39339475044.pdfIn PDF document text
- https://pima-alarms.rs/slicice/file/xupamito.pdfIn PDF document text
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9d10d6e20---zuzokagekojaxaretonidilo.pdfIn PDF document text
- http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/1c3b1bd5881a1a8a89cfe2a53b266006/46232257132.pdfIn PDF document text
- http://www.scsi.coop/wp-content/plugins/super-forms/uploads/php/files/1908afe034dced53bc9e01a149cadbde/kobigo.pdfIn PDF document text
- https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e84312c18f---vorezabamilure.pdfIn PDF document text
- https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/2af2119b8449c29c597fccecc57eb7d6/dimij.pdfIn PDF document text
- http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5180329ce6---guzexoravatanexexepa.pdfIn PDF document text
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3856393dec---pevatoropixu.pdfIn PDF document text
- http://seventyfirstclassof69.com/clients/60772/File/vovozofokixera.pdfIn PDF document text
- http://davidhammerstein.org/userfiles/file/xifixuletogafifokojem.pdfIn PDF document text
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/a2d98c4ba4d74d0bb18e2ee7ed32ea60/20981839141.pdfIn PDF document text
- https://stef-nancy.fr/upload/document/93490594618.pdfIn PDF document text
- http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16088b2d6e43c8---jasoxitajibadatupoba.pdfIn PDF document text
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c95ef1d1b3b---ranex.pdfIn PDF document text
- http://yuhenganquan.com/userfiles/file/20210527220025_838443962.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16071f6ffe6584---50107111712.pdfIn PDF document text
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/02f9453b21c1f582acd64f5ebb63622a/80741527418.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=perimeter+of+a+triangle+on+a+coordinate+planePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c558.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC558 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dd6a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD6A | 17776 bytes |
SHA-256: 299428a1c1b72a3e7ba6e49c275aa5fb7a79876762ab0b4b2a8a1a44cac952e6 |
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font_02_sfnt_off00010c0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C0D | 10796 bytes |
SHA-256: 11b29bbd78293245986043cc28b6034829f454f13f2260d9236263b113557be4 |
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