MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to other PDF files, many hosted on domains associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or trojan payload. No scripts were extracted, but the structure and embedded URLs are indicative of a phishing lure or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
Heuristics 6
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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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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://kientrucphatloc.com/upload/files/wivafufemezelojekelabofiv.pdf
- https://emtracing.net/userfiles/file/webifasex.pdf
- https://vmwarts.com/ecovic/file/zimoberiwibu.pdf
- http://nigerseedindia.com/uploads/podasi.pdf
- http://linkipt.com/_UploadEditor/files/69570760301.pdf
- http://hyosangjo.com/userfiles/file/20210921114618.pdf
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/33be96e0834489c7f262ceb14aa4f064/92810226395.pdf
- https://299-45.com/CKEdit/upload/files/werek.pdf
- http://sabancilojistik.com/userfiles/file/81549934570.pdf
- https://n-zvuk.ru/upload/file/lidifibavigaxebavatejote.pdf
- https://insolite.lu/img/userfiles/files/ruruteragime.pdf
- https://hzautomatisering.nl/userfiles/file/gabodulizikanujafatafijez.pdf
- http://aurastaffing.es/upload/file/69626378628.pdf
- http://www.catedralirodahaz.hu/data/editorfile/29129492133.pdf
- http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f015b0b3ac---vuviwegewebubemabiwur.pdf
- https://www.truckersplantparts.co.uk/ckfinder/userfiles/files/jugekozoranibejajilul.pdf
- http://www.uc-kushiro.net/images/library/File/dipuxijuwisukalo.pdf
- http://phonphangschool.com/upload/files/62402748188.pdf
- http://www.leasebridge.com/CKUPimg/files/jijozawokenekosapa.pdf
- http://maxgear.cz/webpagebuilder/ckfinder/userfiles/files/73537668269.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff5b79ece9---lasikogi.pdf
- http://rajskiewakacje.pl/userfiles/file/58399994187.pdf
- http://pomodorolennep.de/gfx/userfiles/files/86297191875.pdf
- http://purepoem.com/resource/docContentImg/file/2021-09-20/110ab9e36facc3dda9b9172649823553.pdf
- https://jnvhardoi.org/ckfinder/userfiles/files/xigame.pdf
- http://universalthailand.com/images/uploads/ckfinder/files/15998839451.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=tekken+tag+for+mame4droid
- 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_off0000c166.binaf39fc6a07bf49cc9fbc8bca2b4e517f484d23d5cf55bf40b355f684f75f9287 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC166 | 17436 bytes |
font_01_sfnt_off0000ee54.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE54 | 16792 bytes |
font_02_sfnt_off0001066b.bin6ad683c31367b95f76e0236c27ae62b32debe6b85d08e87a48037765b2a2c5e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1066B | 10616 bytes |
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