MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. The presence of a link farm on potentially compromised or disposable hosting, combined with ClamAV's detection of 'Pdf.Phishing.Trojan', strongly indicates a phishing or malware distribution campaign. The embedded JavaScript likely serves to initiate the malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://sentralperdana.com/file/81279147628.pdf
- http://zl369.net/userfiles/file/23073597517.pdf
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16140cddc43aa3---83777380372.pdf
- http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/jelasenazuta.pdf
- http://xn--hh0b97d8is16e.com/userData/board/file/xadugeruwafebo.pdf
- https://nordiskvillaventilation.dk/userfiles/file/5416947248.pdf
- https://arbormaster.us/uploads/files/mivukanukagive.pdf
- http://fgosvo.ru/files/files/7102611066.pdf
- http://trustarshida.co/cache/fck_files/file/14358622253.pdf
- https://fratellifurloni.it/file/14542309550.pdf
- http://pillshop.ru/uimg/files/tenitiw.pdf
- http://to-kajihan.net/js/upload/files/sixevuxapunufumewiseseba.pdf
- http://avstralianature.ru/ckfinder/userfiles/files/loxizixamaba.pdf
- https://erdemlerkoleji.com/resimler/files/disabov.pdf
- https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/55fe39e15afacc9cf798222807c9903e/rulidu.pdf
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/161411b1c3d673---dexajulizekunebilomolenoz.pdf
- http://antitumor.org/filespath/files/20210903005254.pdf
- https://pharma-tools.pl/galeria/file/248723466.pdf
- https://armature.ir/cache/fck_files/file/tofesiwonovakawefa.pdf
- https://pcparts.fr/ckfinder/userfiles/files/polenokozajizos.pdf
- http://refpecsbelvaros.hu/kepek/files/46823554296.pdf
- http://cka-shiba.com/ckfinder/userfiles/files/bikobuviriwupate.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=latest+android+music+player
- 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_off0000d913.binfdaff542b2ddf23e10f45d6cf61116abca5617b081242f9fdd9b925836b7b60d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD913 | 10848 bytes |
font_01_sfnt_off0000f221.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF221 | 16792 bytes |
font_02_sfnt_off00010a33.binace20b054f7ace70903dc423a636032e791f836abe1510e49cd4c47107d2bc6d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A33 | 17068 bytes |
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