MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites. The document body is heavily obfuscated, preventing analysis of specific user-facing lures, but the presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 7
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://accesoriosalmayor.com/images/userfiles/file/nitulajuxebutuwarafo.pdf
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/149ca57d54cdfe7d2ae00b2695714172/1515237878.pdf
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/19ed7a8182eef2346ebd5868604f3c52/37219271310.pdf
- http://www.springperfect.com/upload/finder/files/vegipokajaruj.pdf
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16132c5b33492f---8349173405.pdf
- http://fiumevivo.it/userfiles/files/gugifijer.pdf
- http://coverybox.box8websites.com/ckfinder/userfiles/files/98524351888.pdf
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16139227ea1252---tasedopiraveragejer.pdf
- http://tokyoto.pl/UserFiles/file/bajezukofimoja.pdf
- http://quaisetoiles.fr/img_pages/file/12277830786.pdf
- http://volkshilfe-ktn.at/images/content/files/90727753144.pdf
- http://www.ferm-matic.fr/upload/file/38725748268.pdf
- http://daisytalavera.com/userfiles/files/76958822880.pdf
- http://www.bash.cl/media/file/luragokaluroforazopezone.pdf
- http://serdceprirody.ru/userfiles/file/meraterivep.pdf
- http://elskup.pl/images/assets/file/dujiluxolowup.pdf
- http://dietetyka-24.pl/images/files/68059245677.pdf
- http://icltindia.in/userfiles/file/34458103956.pdf
- http://architettosbaffo.com/userfiles/files/fokazokisejo.pdf
- http://turksebruiloften.nl/userfiles/file/polabumujuta.pdf
- http://gasasosong.com/upload/fckeditor/file/24368649042.pdf
- http://thenikharvconsultancy.com/userfiles/file/56399219615.pdf
- http://yuhongzg.com/d/files/matunutiku.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=most+important+phrasal+verbs+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_off0000b251.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB251 | 16792 bytes |
font_01_sfnt_off0000ca68.bin3954d69b5844e1f32a51a80c42c0150ffdc6cf79e8fbd6e272af9baeac10242f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA68 | 10960 bytes |
font_02_sfnt_off0000e360.bind37c2b9a3089aa0e50fd02c3f8b4aa21646c87d2bac5725cf8e9863c7c624e55 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE360 | 16492 bytes |
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