MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, hosting numerous PDFs on compromised CMS upload directories. These links likely serve as lures for phishing attacks or to distribute further malware payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/kj1r4vtrhu2acsgsnrcmc0c1op/76717137380.pdf
- https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/052a2d79cb49f01837b554e2f9ac1cef/lexinadodovut.pdf
- http://www.aadhar-interior.com/userfiles/file/29457551562.pdf
- http://zdrowejaja.com/Upload/file/bogigenevadabirodox.pdf
- https://reparationmobile.net/userfiles/file/63771293816.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160afcf3f824ad---23802966937.pdf
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afadfc30f4f---32178900203.pdf
- http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6133708438---tenulavuxiketuzisezoveli.pdf
- http://lycee-elm.org/userfiles/file/21596198669.pdf
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c96bd594e4---gepogus.pdf
- https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/927e8d81be8456db992b51442e8098dd/31938680250.pdf
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940ba0779e4---95216008120.pdf
- http://abnicum.com/files/file/wugifobegasuj.pdf
- http://architettotamborra.eu/userfiles/files/86284019779.pdf
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8c47d0441---vitujeto.pdf
- https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/408a5eef1af87a2f76b92bbd75fb2af3/resepe.pdf
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5b9d84f25---60602190668.pdf
- http://ahsaipu.com/v15/Upload/file/202157959597555.pdf
- http://budohurtsa.pl/userfiles/file/94346539423.pdf
- http://oinworkshop.com/clients/6/6d/6d9161a7191ba42f41383a85782e2f4f/File/93991713314.pdf
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fcabb4ab6c---dewevazilezijogikes.pdf
- https://doktor-ara.com/userfiles/files/xuwedexexid.pdf
- http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1609affbba5f48---75233955852.pdf
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b65d6cae1---26788568494.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=incomplete+dominance+answer+key
- https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/b49775ad6fb219f1376292b92fe08ac1/38126150730.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_off0000d598.bina4eb5099e31c328c99c8a272d028089d8f1f4c00c4dfb1e561732fc558964c88 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD598 | 17320 bytes |
font_01_sfnt_off000102c6.bin1cef47549ffec334cad791821b3b627af7bacc8e11f2d5543c98d9fd1e2275df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102C6 | 10916 bytes |
font_02_sfnt_off00011c1b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C1B | 16792 bytes |
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