MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with several URLs pointing to compromised WordPress upload directories, suggesting a potential phishing or malware distribution scheme. The document body was heavily obfuscated and unreadable, providing no direct clues to its purpose.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/3978f62e71ac24b20cfc705a413cbf76/54353912241.pdf In PDF document text
- http://homeopathyhongkong.cn/files/53379929378.pdfIn PDF document text
- https://emmaushuis.org/pages/zibesewoli.pdfIn PDF document text
- https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/99ipa7uk1peauesisequ8ddavr/74259156320.pdfIn PDF document text
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16096a51726ed9---42547347147.pdfIn PDF document text
- http://stpatricksreunion.org/clients/84553/File/30183523746.pdfIn PDF document text
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16095f0cad7415---31361018006.pdfIn PDF document text
- https://krassimirtaskov.com/userfiles/files/5743789119.pdfIn PDF document text
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/vl2i18jrhhrdffobc89e0vtrs5/sojagupepuvawid.pdfIn PDF document text
- https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/2ede5ba55a1132c1d2ed488f84a82592/35454590736.pdfIn PDF document text
- http://teakdeck.pl/files/file/vopolina.pdfIn PDF document text
- http://springhs1988.com/clients/a/a7/a70db2535ed58991dd9724faf9b165d0/File/6365035777.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/s5h50bodftgl52b31nnopo17e0/zodikovofonum.pdfIn PDF document text
- http://sure2trips.com/bot/ckfinder/uf/files/94875344777.pdfIn PDF document text
- https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/o3lcbr0f0eafsr44r5aq2nrsq3/15804032215.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/eb5d4a696d6a624aa411bd20830bb764/58000987008.pdfIn PDF document text
- http://titusauto.hu/kepek/file/67931391755.pdfIn PDF document text
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/prc8oh3j687jbenp5nplhsqs0u/85997895265.pdfIn PDF document text
- https://fedico.ca/upload/editor/file/vefavenufukovosa.pdfIn PDF document text
- https://menu2uplus.com/images/file/83945724788.pdfIn PDF document text
- http://przychodnia-felinskiego.pl/uploads/editor/file/suxodavuz.pdfIn PDF document text
- http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/4qhhgautckr5pi6gfpgs7s5ac4/54218911521.pdfIn PDF document text
- https://amatnieks.com/pictures/image/vuwufufobitozilojuzowebu.pdfIn PDF document text
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/fe183431851ad20ae74c42282b7d8c98/kugurubibevatokipodeno.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=5+second+rule+junior+game+questionsPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ea99.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA99 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000102b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102B0 | 11124 bytes |
SHA-256: f9fe0bf1e851c55cc586cecbde2ff075839a326ac2fb15134da861971aca58fa |
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font_02_sfnt_off00011c17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C17 | 16452 bytes |
SHA-256: b99b2f340c9deee534a1ed6c23410c2624ddb8c33a03da6fabcb29f04b6b4042 |
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