MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ClamAV and a machine learning classifier. It functions as a link farm, containing numerous URLs pointing to other PDF files hosted on compromised websites. This suggests a phishing or malware distribution campaign, where the initial PDF serves as a lure to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://nomylo.ru/uplcv?utm_term=tinto+brass+yts PDF link annotation
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16140c02b63f29---vedunu.pdfIn PDF document text
- http://candybeauty.vn/upload/files/tuwudu.pdfIn PDF document text
- https://ruiguoex.com/upfile/files/2021/09/11/jonitanesiruxorugiwin.pdfIn PDF document text
- http://banquat.com/userfiles/files/zurewagikekemir.pdfIn PDF document text
- https://urology-andrology.com/userfiles/file/46299883084.pdfIn PDF document text
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/hoccck8rq89tiv3grbtjub5knj/5853231891.pdfIn PDF document text
- https://gad-elhak.com/userfiles/file/vujemekupujepox.pdfIn PDF document text
- http://thedewakohchang.com/image/upload/File/170124592.pdfIn PDF document text
- https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/161403c8743712---95207383055.pdfIn PDF document text
- http://sage-chem.com/image/files/20210911_220452.pdfIn PDF document text
- http://studiomanzetti.it/userfiles/files/pufumixifixej.pdfIn PDF document text
- http://tiwtactic.com/userfiles/files/85366558862.pdfIn PDF document text
- http://bestbelly.org/content/files/files/bojosonopesepejadev.pdfIn PDF document text
- https://maintogelonline.info/contents/files/gekojire.pdfIn PDF document text
- http://ghibms.com/userfiles/files/tisobuvugapopojonafi.pdfIn PDF document text
- http://short-story.ru/upload/file/nevogibolaruxotute.pdfIn PDF document text
- http://tyros-club.de/userfiles/file/63765652693.pdfIn PDF document text
- http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161431d4bc4c7c---16463760314.pdfIn PDF document text
- http://195exim.com/datas/files/65842309411.pdfIn PDF document text
- http://www.themixchange.com/userfiles/files/22300264342.pdfIn PDF document text
- http://ymmicro.com/files/files/6445239707.pdfIn PDF document text
- 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_off0000ad53.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD53 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c56a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC56A | 10140 bytes |
SHA-256: d33892653ee72001019922960bf57f893153033dd7f42ac36e14a8ebd1da62af |
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font_02_sfnt_off0000dc3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC3A | 17492 bytes |
SHA-256: f9f664b6778ce0a18866c1b862684b46a6946ddbbe4907143fadb0fa2fcd9936 |
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