MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple heuristics as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV also identified it as malicious, specifically a phishing trojan. The embedded URLs likely serve as a lure to redirect users to malicious sites, a common tactic in phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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 http://synphabase.ch/upload/file/tegevix.pdf In PDF document text
- http://sungder.com/upload/44235799785.pdfIn PDF document text
- https://visualmotion.nl/uploads/file/raxizazapelimavezori.pdfIn PDF document text
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161388a79f4030---widis.pdfIn PDF document text
- https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/e2f3af77cfed3767716bf14b1418ef09/vaxegirizivi.pdfIn PDF document text
- https://oncallanatomist.com/ckfinder/userfiles/files/lidelirijituwivesubo.pdfIn PDF document text
- https://charming-dc.com/uploads/files/202109150913166366.pdfIn PDF document text
- http://handlpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fotegisadudizigasigo.pdfIn PDF document text
- http://veterky.ru/ckfinder/userfiles/files/39516356356.pdfIn PDF document text
- https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/ec35bf0354447b6302d1f2bd982b2912/23587564478.pdfIn PDF document text
- https://trisyscom.com/userfiles/file/pozuzivu.pdfIn PDF document text
- http://manilag.com/FileData/ckfinder/files/20210914_58F8E50D5A641478.pdfIn PDF document text
- http://www.videobezopasnost.ru/ckfinder/userfiles/files/39982360601.pdfIn PDF document text
- http://www.photonics-science.com/ckfinder/userfiles/files/18193247605.pdfIn PDF document text
- http://sushistoryus.com/uploads/files/taludim.pdfIn PDF document text
- https://littleitalypizzany.com/nbloom/fckuploads/file/31702404881.pdfIn PDF document text
- http://gazomotor.com/allinone/file/tukuxewovupo.pdfIn PDF document text
- https://bgg.pirkitpadangas.lt/ckfinder/userfiles/files/lozalosofazomovavilokixej.pdfIn PDF document text
- http://icloudcleaners.com/uploads/account/autoresponderfiles/48926604072.pdfIn PDF document text
- http://xetaihyundai.net/upload/files/momaxoxebifofikinusa.pdfIn PDF document text
- http://aminotp.com/upload/files/bipotawogofinutusatobifu.pdfIn PDF document text
- https://96662888.com/editor_upload/file/41383404477.pdfIn PDF document text
- http://townofwinslowin.com/flash/townofwinslowin.com/file/52563490352.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=upc+lookup+musicPDF 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://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_off0000d556.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD556 | 17788 bytes |
SHA-256: fff9a360d03f3d135544353c5c57b9d1fb35bf7f4d768fa4ed465e2112970039 |
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font_01_sfnt_off00010324.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10324 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011b3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B3B | 10140 bytes |
SHA-256: 3315a7ce7e93afe5c66bff1ce5e0449b6f9a6701fb5e503d593ef7fc6b358e60 |
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