MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs, many of which are structured as link farms, suggesting an attempt to obscure malicious intent. One heuristic specifically identifies a link farm on disposable hosting with a UTM term redirector, pointing towards a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
Heuristics 5
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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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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://automsystem.com/UploadFile/file/20210910143413662.pdf In PDF document text
- http://www.tlo.ntou.edu.tw/ckfinder/userfiles/files/besegusorafilozitopuz.pdfIn PDF document text
- http://stickers-moins-cher.com/userfiles/stickers-moins-cher.com/file/35365066024.pdfIn PDF document text
- https://salondumariagededijon.com/userfiles/file/34696319247.pdfIn PDF document text
- https://rheinfurth.de/userfiles/file/mivurenagukabegumure.pdfIn PDF document text
- http://strahyi.ru/images/file/binikikajukajudepupajewi.pdfIn PDF document text
- https://pilot-nav.socksnbows.com/ckfinder/userfiles/files/55280208791.pdfIn PDF document text
- https://gornjastubica.hr/files/8502750473.pdfIn PDF document text
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/b71db2a7d00192a1bbcf149b835e33cf/14195708266.pdfIn PDF document text
- http://hoadon-dientu.net/images/files/37654750535.pdfIn PDF document text
- http://vitalchurchesinstitute.com/files/file/baxazuvanozozirum.pdfIn PDF document text
- http://sabaispa.net/userfiles/file/burusuvigijaw.pdfIn PDF document text
- http://auto-rad.pl/userfiles/file/vaxopesogumepuwejobup.pdfIn PDF document text
- http://unibox.lv/files/text/gijemewepezuzeduzadi.pdfIn PDF document text
- https://cvzona.lt/resources/img/files/85540751955.pdfIn PDF document text
- http://flexinform.com/hirlevel/file/57732362843.pdfIn PDF document text
- http://aesg2edcv.handylover.com/upload/files/muluwen.pdfIn PDF document text
- http://tongchangkj.com/uploadfile/file///2021090819452142.pdfIn PDF document text
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136a5319aa72---99214837368.pdfIn PDF document text
- http://tourhong.com/FileData/ckfinder/files/20210912_DAF1C777A9FB94A2.pdfIn PDF document text
- https://przyklejki.pl/userfiles/bejajujigokinusutuzife.pdfIn PDF document text
- https://virtualpulse.eu/UserFiles/file/dusazebomulumodemenam.pdfIn PDF document text
- https://rumusjitu.com/contents/files/fuwoxizezibiwefedoxofex.pdfIn PDF document text
- https://usssecuritate.ro/userfiles/file/rusawatusuposotilubi.pdfIn PDF document text
- https://ashleymongolia.mn/uploads/files/kimurelanofalakixiwamawuw.pdfIn PDF document text
- http://matras-devison.com/upload/file/pomifefawe.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=download+gta+5+beta+versionPDF 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_off0000cdfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDFC | 10852 bytes |
SHA-256: 839cd9f1d32026e23f60172cc8545dd5e4203a5c0cf3e4bf8d498d1c0b017321 |
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font_01_sfnt_off0000e715.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE715 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ff27.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF27 | 17492 bytes |
SHA-256: aedd5bf1994d6698309b3f4a5d80ba2bf5ed890be42a7e4fdf3d8b7fe613286a |
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