MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. Static analysis revealed it functions as a link farm, with numerous URLs pointing to potentially compromised WordPress upload directories. These links are likely intended to redirect users to malicious sites for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbffe34eb3---90828458990.pdf
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092626cc2c58---89541107945.pdf
- http://syarmarka.ru/userfiles/files/72824256169.pdf
- http://seksdagen.nl/userfiles/file/kenisiwupewesowuwumamob.pdf
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e360e7721cd---8330728739.pdf
- http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16082fc790f437---pibaronowegeximeg.pdf
- http://nuraski.pl/wsg/userfiles/gutizowavopaner.pdf
- http://superlitefan.com/uploads/files/fezugesalapazafaneve.pdf
- http://mhs69indians.com/clients/864804/File/88656566693.pdf
- https://easy2ticket.com/upload/files/56486648514.pdf
- http://airholic.com/UpFiles/WebEditorFiles/file/tufeninigixelose.pdf
- https://communeouchamps.fr/userfiles/file/javim.pdf
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160d1b0996917d---munuwunexamubun.pdf
- http://www.mueblesgamez.com/ckfinder/userfiles/files/4912648410.pdf
- https://ahreco.com/uploads/news_file/futenofufuf.pdf
- https://oriental-kitchens.com/userfiles/files/jijifevalisamelakozuzu.pdf
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/ulot5rvtvq1gmvcllm7mbrp5gf/poridakuruwugomarudexul.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/0eed84ea7bc0ddfcd8a65513aff0a343/wifuvapepudefuxozetugulo.pdf
- https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/cf483c0145ac8700fad5b981160abb02/5986205362.pdf
- http://havefuntogether.com/image/upload/File/rojexu.pdf
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160aa319b11127---tokariwotutejivu.pdf
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/b0216dbc602c15f521ec2965767b04dd/siteritokadokim.pdf
- https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/3ea0656425envrrcghtggvcq5n/58999040282.pdf
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c54237bc8---bavolumebibojem.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=french+verb+arriver
- 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_off0000d144.bin74aab2e00878bf3a92a78441b57f725170408ffc9903b434d75805c80dc3d137 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD144 | 18448 bytes |
font_01_sfnt_off00010058.bin25ebb54cadad9eeeff8fafd00eb8cc99c34bbb5bd00dc638ac23d4edec59a0f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10058 | 10080 bytes |
font_02_sfnt_off000116a9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116A9 | 16792 bytes |
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