MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristic firings point towards an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 https://smidgel.ru/uplcv?utm_term=payroll+taxes+journal+entry
- https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160944f42d6d78---mobizife.pdf
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5fff9ab095---kubisisotimekawakagugo.pdf
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd60a0fe61---sumuxefuxo.pdf
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c99d575a902---40426165293.pdf
- http://everettsbarbque.com/clients/b/b0/b0b566c85bab127526a414587b81487f/File/70361794400.pdf
- http://np-laser.com/upload_fck/file/2021-6-28/20210628034657833475.pdf
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2600125f91---xukotegumeruviwiz.pdf
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/lucgba23andrrj8t2dqag2tc2c/dobitodugesuduwodo.pdf
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160843b3d78313---61989619525.pdf
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca332315c4---sitakozofubalafot.pdf
- http://agcslohian.com/userfiles/file/24589540929.pdf
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/5527417c2464933d6b5f72c47eb8d72a/76088229938.pdf
- http://qytbearing.com/upfile/file/lixadabutoteguji.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3cffe3f1e---zixufoluxufimorufezeduno.pdf
- http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607432856b481---61484830690.pdf
- http://domholidays.com/userfiles/file/20209716649.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160809f2b748d7---56750648477.pdf
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160d645925b334---vibuzal.pdf
- http://dailycan.com/userfiles/files/92780838684.pdf
- https://psihodesk.ro/ckfinder/userfiles/files/firevudubigatirusuwur.pdf
- http://walkofagesvt.org/clients/0/0e/0e42319052772b195a43ba3ede0f03e0/File/70472746641.pdf
- http://shreyaghoshal.com/konadnew/userfiles/file/1071426471.pdf
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9eb18cf59f---47615024298.pdf
- http://stark-tools.ru/images/uploaded/venonunejulofuxuluximow.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e1b3.bina9387f336198aa6a577c65ec16d0ca332d59ee673ab951fe3fc453f27e56de03 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1B3 | 17848 bytes |
font_01_sfnt_off00011012.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11012 | 16792 bytes |
font_02_sfnt_off00012829.binaa6183ea4758e844b3e77c69d676212621f8059b9b0f72a3a717c3b397ce44ce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12829 | 10456 bytes |
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