MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites. These links are likely used to distribute phishing content or for SEO spam, as suggested by the 'utm_term_redirector' flag and the nature of the compromised upload paths.
Machine Learning
- Nyx PDF Classifier malicious score 0.9845
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/1m1dt8edq3ouvuhsln9l9h7tm9/93291976816.pdf
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/7269d5c4cef7f27af40492e617100dfe/11669677033.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16073e65580e60---punevogadirumelilotezume.pdf
- http://videofilm-tv.ru/content/File/22936143.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed34067bf1---vasepotopenupotaz.pdf
- https://bilalyapidekorasyon.com/userfiles/file/34913149264.pdf
- http://aptchasers.com/FCKeditor/userfiles/file/demimuzanebo.pdf
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/6fe60c99cf48a466b033a20f31a6d94c/76735830966.pdf
- http://ndt-tl.ru/upload/file/waxonilememe.pdf
- https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/7baf353d7cb41c954cb7018e4a09f8b5/28663921609.pdf
- https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/f090d36ca3f6712ddfb28f198b5c782b/wibofe.pdf
- http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16087984cbd1d6---18279805949.pdf
- http://fszhenjia.com/upfolder/e/files/20210608234610.pdf
- https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091d6c660613---27162611286.pdf
- http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb058ecb5c7---5678851891.pdf
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/adfd1e26476f189894218a461abb6d97/98667541193.pdf
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a20d6978a5e---vogaketunotogilajubod.pdf
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8cde15ac9e---52156315500.pdf
- http://www.cenlajobinator.com/siteuploads/editorimg/file/vatenadunipuzotilipamama.pdf
- https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/c1oaatleefjsp6reu58d908u70/gixizam.pdf
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607535687226c---80476141476.pdf
- http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/1a0a356123bec3e34212142cb855882f/12264122454.pdf
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2573ad81f---29229589454.pdf
- http://vasvaripalmuzeum.hu/upload/file/68755331800.pdf
- http://hwayinn.com/image/files/20210605_005958.pdf
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607030ad53bb5---74212580210.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=benefits+of+product+mix
- 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_off00019f2d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19F2D | 16792 bytes |
font_01_sfnt_off0001b744.bin90d63e097ce08730baddb162159a2f704e09598365bf9698f1ac271a5e6e5e1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B744 | 10828 bytes |
font_02_sfnt_off0001d045.binb711f32b86f318ad22639c2e37d8c6551616577bcfff8c11a658b73a87174192 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D045 | 17876 bytes |
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