MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or malware distribution attempt. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The PDF's structure and embedded URLs strongly suggest it's part of a phishing campaign, likely using a lure related to indemnity clauses or contract samples.
Machine Learning
- Nyx PDF Classifier malicious score 0.9860
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://chcial.ru/uplcv?utm_term=indemnity+clause+in+contract+sample
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd2dce4e10---pazusozusetemotu.pdf
- https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075b6821caba---lawukapadag.pdf
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/iqqv6u2i96kl35chupnlf1v477/10206482995.pdf
- http://bike-aholic.com/UserFiles/file/terov.pdf
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a77698ad5---vakorerawul.pdf
- https://menlopark.com/wysiwygfiles/file/ritikesij.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b85298c1b9a---fujetulanixufofoxutojes.pdf
- https://topplene.com/upload/ckfinder_temp/files/20210619080437.pdf
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2162dfddb49e5ae79adb2eed36af7050/75723699381.pdf
- http://barudan.hk/UploadFile/file/20210624004546375.pdf
- https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/bjqop2r1uth90j52nrjg6uvq7o/39575523817.pdf
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160806d9d58321---navazeritotetowabufuwu.pdf
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac605d50ad---zajim.pdf
- https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e5073addd---7626943018.pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f81d73e6f---19626964020.pdf
- https://stopserv.ru/files/file/zibitixaxigojuk.pdf
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/16091f0c7c9e0b---gotowizaguriforoti.pdf
- http://luvnchrlysenglishtoys.com/clients/861429/File/falopefirovixeditujilox.pdf
- https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c63749d1a5d---duludivu.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c25ab36ba---pixajizavufutotenefik.pdf
- https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/209a5358accdb7441368e186a2dc6a65/repefujaruwugikusekivi.pdf
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089dcfd50e7f---zelex.pdf
- https://fablab808.com/nbloom/fckuploads/file/92622342305.pdf
- https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/86ea193fba7c551a87a49ec7dba61acf/ranopizi.pdf
- https://comfortinnbarrie.com/phpsites/vertical_living/uploads/file/66560692101.pdf
- https://burstallconrad.com/editor_files/file/pixosikigatexepowetirukim.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_off0000e826.bin5f4028a17d8dc1be113eccbd61afbe32091bb9b24db3fc5947eabc8524ea7fba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE826 | 16908 bytes |
font_01_sfnt_off00011387.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11387 | 16792 bytes |
font_02_sfnt_off00012b9e.bin049389c76354a854a4f636d6a42bdd5f93841a874d827a2b774b2e2e0b8ae6bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B9E | 10840 bytes |
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