MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier as malicious. It contains embedded JavaScript and numerous external URIs, including one pointing to 'crewmak.ru' with a query parameter suggesting a fake application lure. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates the document is designed as a link farm on disposable hosting, reinforcing the phishing or malware distribution intent. The embedded JavaScript likely facilitates the redirection to malicious sites or the download of further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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=fake+ultrasound+app+android PDF link annotation
- http://keacg.com/upload/files/49242773538.pdfIn PDF document text
- https://mehreganimaging.ir/images/upload/files/melepamenudaxuropaser.pdfIn PDF document text
- https://investmentskillsgroup.com/images/userfiles/file/33154533531.pdfIn PDF document text
- http://grafosaleservice.cz/images/fck_editor/file/47981277651.pdfIn PDF document text
- https://classoft.ro/userfiles/file/60659443359.pdfIn PDF document text
- https://bearings.vn/images/ckeditor/files/sofade.pdfIn PDF document text
- http://tokyoto.pl/UserFiles/file/14638135149.pdfIn PDF document text
- http://dribblebar.pl/userfiles/file/tuvuzuwevogajivetoxu.pdfIn PDF document text
- http://lindendirect.com/tempimg/file/fefapanegafi.pdfIn PDF document text
- http://creativeindustries.ru/uploads/userfiles/file/12073868030.pdfIn PDF document text
- https://un7un9b3rl1pa7-99.com/contents/files/64672990847.pdfIn PDF document text
- http://regalmotors-jp.com/js/upload/files/53022276736.pdfIn PDF document text
- http://gold-carsales.com/js/upload/files/31032636043.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1613b7d740602a---wawunot.pdfIn PDF document text
- http://criollo-cocoa.com/userfiles/file/votagekelafavabut.pdfIn PDF document text
- http://juentai.com/userfiles/files/81119963492.pdfIn PDF document text
- https://thai-airpark.com/ckfinder/userfiles/files/99026287594.pdfIn PDF document text
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dd3728eb07---39571547210.pdfIn PDF document text
- http://zoncmswebsitebeheer.nl/files/editor/file/nisabilaxeramu.pdfIn PDF document text
- https://innovativallatgyogyszer.hu/fileok/file/fodalulirabatorutobi.pdfIn PDF document text
- http://recviem.ru/img/upload/basopusakorefadumasol.pdfIn PDF document text
- http://bonezi.morefriendship.com/upload/files/paroma.pdfIn PDF document text
- https://rolcsi-bau.hu/userfiles/files/kanimokosonunemuk.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_off0000e1b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1B6 | 10556 bytes |
SHA-256: e78d3a74ed09aaa8da5ba38fd2edbe873f7c60d3812a51dfc29840f606de30bb |
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font_01_sfnt_off0000f9d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9D9 | 18656 bytes |
SHA-256: bb3556249b8978f214ccc70697270b5081bf2e9e4047d9a0f99f8bc7f74247d8 |
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font_02_sfnt_off00012a90.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A90 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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