MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics as a link farm, with many distinct hosts and links pointing to potentially compromised CMS upload storage. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains references to 'amalgamation of nigeria pdf' and 'wkhtmltopdf', suggesting a lure document potentially used in phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://guapa2.com/admin/fck/file/birevajivivasix.pdf In PDF document text
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/4b9be89814bc09b51a0726b9604445e2/luwawuw.pdfIn PDF document text
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/b970815fa8a1a8b9a79d8b100235e1f7/bogula.pdfIn PDF document text
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6ce0be65e---42852162085.pdfIn PDF document text
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/drh5frq0pukafrlm34kt8thtr4/zizabududoluxa.pdfIn PDF document text
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/h1m8f25afk58rc6hempt2mrbva/69326558770.pdfIn PDF document text
- https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/1oncr9at4bh5apkn4cr4nrsev4/mosidoziwewonavu.pdfIn PDF document text
- http://yakutiaprime.ru/SITE/files/editor/file/viworogedefadaj.pdfIn PDF document text
- https://burragebrothers.com/demo/jolie/beta/userfiles/files/biforekenaletorarikaxopu.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3803051c6---2391448600.pdfIn PDF document text
- https://amatnieks.com/pictures/image/54799776379.pdfIn PDF document text
- https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/86343ca12e8ecd8e890f2a2f398f15ec/toxegejawibujusisewi.pdfIn PDF document text
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608db7e0c896a---96666958178.pdfIn PDF document text
- http://permanentnimakeup-brno.cz/userfiles/files/vewavupidirikivuloferija.pdfIn PDF document text
- http://goodwynva.com/clients/d/de/de91e19d235d8a3764238851c6b73f99/File/15160391059.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=amalgamation+of+nigeria+pdfPDF 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000113e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113E2 | 5172 bytes |
SHA-256: ed6d685b8d7e3260c4eec7b1807c11d7843b4e271a4bdac4490f73d0efd3760c |
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font_01_sfnt_off00012565.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12565 | 12036 bytes |
SHA-256: a9aa9fb83ad928d17bd903eedf185b21315de14def829394b2cdb3866e73d4e5 |
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