MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external PDFs hosted on compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution campaign, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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://escuelasfutbol8.com/docs/files/gabebisozibinu.pdf
- http://anhbanglaw.com/userfiles/file/gojipi.pdf
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/kcthohmaeou5fl7kealkgo4d52/58707078822.pdf
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f5187834f---nopujukakupepisutufed.pdf
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/se1i0qasd1uuka26vuj5no3t4b/jasivebirepibabibom.pdf
- http://pphu-joanna.pl/fckpliki/file/61325580644.pdf
- http://scandirent-new.ru/uploads/assets/file/97512306394.pdf
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607e98e08285e---54952792484.pdf
- http://amoy-art.com/Upload/file/93463697755.pdf
- https://amitadevnani.com/userfiles/file/21534367757.pdf
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e73928c8bb---17437319635.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f11c8033620---dibumalubuguze.pdf
- http://feach.ie/images/uploads/file/80230718130.pdf
- https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/4509b779232c2b68883ee1b9819d5c7e/25460476535.pdf
- http://xdata.pl/app/webroot/img/ckf/files/49728215818.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606d32e5112df---56023682952.pdf
- https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/c12b58022fc36b033ec4e09eaa60a355/wonusejitixu.pdf
- https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/1ab1d3eaabf8b5d064d010723d8f2e36/kumujawabi.pdf
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869a1c8a95a---42674405599.pdf
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/dv8t0nm15vevq1qji9ibf420l5/pofomuzotisujawudit.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608db034403e1---90326167178.pdf
- http://miroslaws.com/ckfinder/userfiles/files/10878482952.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=nils+frahm+piano+sheet+pdf
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f01a.bin562d39cc93351683f3420870a5578826c1285db13c691c08f99be18f4980e560 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF01A | 1860 bytes |
font_01_sfnt_off0000f8d1.bine4967bff3c8960877a6495d7063780faef1e06e7f5e3dc3cd2c763cc045d92f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8D1 | 10740 bytes |
font_02_sfnt_off00011141.bin1f1b179c1da7b8aa76f4cdbd6e6db7d4691a65a8f65445dbd42fab8cc9a618df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11141 | 18140 bytes |
font_03_sfnt_off00014058.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14058 | 16792 bytes |
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