MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to compromised CMS upload directories. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, lacking readable content that would suggest a specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9921
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://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/b8a87d1b276aaa258396cc7c82810d65/72602131594.pdf
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/gc9hjusufd6ep33te2cjuqm5j5/31813962872.pdf
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c75bdd7970c---lizufakuvasadisibojek.pdf
- https://inijariku.com/ckfinder/userfiles/files/17161721251.pdf
- https://adepotcustom.com/UploadFiles/file/20210427221249183.pdf
- http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160da9995da779---puzasokujujikitobes.pdf
- http://sns-russia.ru/userfiles/file/nibokituxaxulul.pdf
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7e0772ae1f---48147694216.pdf
- http://analogsys.com/uploaded/file/559318366089a44561a9e.pdf
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca3ddacc4b3---fipusarakavalemevi.pdf
- https://dpt-mh.com/uploads/news/files/29545433272.pdf
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/e1d29aba9b43cfdec32c1f09854696fe/tikasakanezonuge.pdf
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606dc883b8be5---51811238374.pdf
- http://www.euro-fly.eu/userfiles/files/90777340629.pdf
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160921d6acbcd6---forivusenado.pdf
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/226a810e18c81f372443002649d01a9d/99610802585.pdf
- http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160c63076a4c78---2770815136.pdf
- https://brahmagnanam.org/fck_uploads/file/fowalafawaka.pdf
- http://vin-baietii.ro/ckfinder/userfiles/files/50150517160.pdf
- https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/3483cdf81cc0939e6f2d3c3bed80e4b6/kugasagadigozisu.pdf
- http://www.findvoters.com/userfiles/file/30378587743.pdf
- http://s8radziejowice-paszkow.pl/userfiles/file/23429796188.pdf
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd637306957---tadebosapev.pdf
- https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a0c2158c40---kimaxamuko.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=angry+birds+star+wars+character+encyclopedia
- 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_off0000c616.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC616 | 16792 bytes |
font_01_sfnt_off0000de28.bind3ec3cf0286d5008fa7b4f3d685e8f794404e1d0f9649d4b85390673a1421b61 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE28 | 18120 bytes |
font_02_sfnt_off00010abb.binf0fe38d53df2ce3c228211e06f06f1f94e2995311f45ce30f4c3b58f390b1dc0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ABB | 16460 bytes |
font_03_sfnt_off000121b5.bin5b92a68ca5d0af89ae778d545ebff024230dcf1b4067fb0279e5d8f15ad5e68e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121B5 | 11116 bytes |
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