MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users. The presence of embedded URLs and the PDF structure itself are indicative of a phishing or malware distribution lure, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 https://crewmak.ru/uplcv?utm_term=black+widow+full+movie
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614caf510377e---35172676480.pdf
- http://angel-conference.org/upload_fck/file/2021-9-17/20210917000027438020.pdf
- https://artistprasanna.com/userfiles/file/28558060975.pdf
- http://beauty214.com/uploads/files/202109012237104633.pdf
- http://gelinyuanyi.com/upload_fck/file/2021-9-15/20210915224836926386.pdf
- https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/161369b99f1626---41552103847.pdf
- https://marthomaktrplrdiocese.org/ckfinder/userfiles/files/59061321479.pdf
- http://gazosilikatnn.ru/uploads/files/xugovorowaroruf.pdf
- http://alphanaturehk.com/userfiles/file/4805467566.pdf
- http://gediklimakinahidrolik.com/resimler/files/rejawalif.pdf
- https://avigailpekelman.com/sites/default/files/file/sikogilupi.pdf
- https://nasikampung.info/contents/files/65283657772.pdf
- http://cluboutletmoto.net/campannas/file/20885717799.pdf
- http://creative-format.com/upload/editor/files/90692152354.pdf
- https://dubaimotorcycletours.dubaimotorhomerentals.com/uploaded_images/files/30789071268.pdf
- http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/navusofoxele.pdf
- https://cowichanseniors.ca/userfiles/file/luvesodemawotejekerevogi.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f4ef7c567c---64873348031.pdf
- http://panyuchen.com/ckfinder/userfiles/site_eachfun_com/files/14836382367.pdf
- http://lamelove-zakryti.cz/userfiles/file/92539007013.pdf
- http://slovbau.sk/test/userfiles/file/nemokanuxaji.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/57f0dd5aa64eb868c0cc32e7e02928c2/kukewez.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_off0000adab.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xADAB | 16792 bytes |
font_01_sfnt_off0000c5bd.bin75be43c753a74e9f279f4c37d8072d96ab54ac6249f8d4b9fa1729e4b229bb49 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5BD | 15588 bytes |
font_02_sfnt_off0000ed47.binb55335769cc77bf2eaf5f9dc18167ef69c7d5bd248b1e8278020327392c5f24d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED47 | 10564 bytes |
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