MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF link farm heuristics and embedded URLs confirms this behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.9765
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://czechdidgeridoo.com/admin/upload/file/67876627066.pdf
- https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160addc5230771---1565263481.pdf
- http://duonglaohanoi.com/userfiles/file/62921991743.pdf
- https://baigiangtoanhoc.com/upload/files/bitorivudoni.pdf
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a35fb966a90---lilogoriwugebus.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2350375cb---70502444627.pdf
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/4qjqsv4d2c0i7p0mvmbu01il10/55429049232.pdf
- http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d66d5321b7---lipowuvetegufepumexob.pdf
- https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/380pr8rn9aoj8hk3hnshoc8ot5/malasizagevoziriroriwa.pdf
- https://aravlicraft.com/cmsCart//upload/file/45206905448.pdf
- https://solidpractise.com/files/userfiles/file/36070723187.pdf
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/b7888daa8552be8649ac1703d60c3961/3605270060.pdf
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/d0037c448b17475915e4f1d3aa5457d3/74759604297.pdf
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077e6dd95cdb---70036918114.pdf
- https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/4d97b62258a05ba61431440c150f5003/57440889338.pdf
- https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/d257ba1da2f67c2274ce5bcc3676e489/gadonamexis.pdf
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/a6ab2fba10ef71dd3b0b5f204abe260e/6470520595.pdf
- http://dekogard.net/deko/veri/_files/lurewezemen.pdf
- https://dm288.com/slicice/file/gejazomisagutakejajoli.pdf
- http://aceonlinementors.com/userfiles/file/xinifumubexif.pdf
- https://cr2tek.com/userfiles/Proj_Name//files/84020718872.pdf
- http://lhsclassof68.com/clients/73441/File/bewenawekorokuxezulerulid.pdf
- http://antifftech.com/uploadfile/file///2021051004161366.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e8b659abc---mevuwedobudo.pdf
- http://jagatjyotischool.org/jagatjyotischool/userfiles/file/wimukutumapasot.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16094c3e31039b---vigujalusigi.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=ballad+of+a+mother%27s+heart+meaning
- 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_off0000e7b0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7B0 | 16792 bytes |
font_01_sfnt_off0000ffc2.binad9285a128320bce27cd8982df8db56f9e281c1924898b82e030c56f9519e25f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFC2 | 17112 bytes |
font_02_sfnt_off00012bfe.binbfc7ce51a1a9b37382af61f0075eb0cdb972126da031002d338643432d80e6e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BFE | 16252 bytes |
font_03_sfnt_off000141df.bin5fabbba55ea62e84fc2eb05dd499f23fd09482245213694932ab9238098be633 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x141DF | 10888 bytes |
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