MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to various domains, including compromised WordPress sites. The presence of UTM parameters in some URLs suggests an attempt to track user engagement, further indicating a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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://irlanc.ru/uplcv?utm_term=lean+on+download+mp3+mr+jatt
- http://tochalco.com/uploads/files/12128479117.pdf
- http://candemdientu.com/Images_upload/files/6929070769.pdf
- http://arnold-sitter.com/CKEdit/upload/files/vamarojebevuno.pdf
- http://maxkbm.com/clients/2/28/28fcaa936e2ecbeb6c9a97ea0f1ab253/File/basapomakisafojalivatub.pdf
- http://zxpgw.com/userfiles/file/82216653147.pdf
- http://aire-limpio.com/img/editor/file/jamuvurelubexoxenonevekop.pdf
- http://koreaseals.com/ckfinder/userfiles/files/81553084510.pdf
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073e1989dc82---xavakagukowitiwidif.pdf
- https://gites-les-bardots.com/userfiles/file/vamilonefikopasufaxe.pdf
- http://nordicaluminium.ru/userfiles/file/ratidekele.pdf
- http://hanilkwanla.com/uploads/files/favilinefopure.pdf
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/9f9f7680a962cc1b99360184647ba03b/fativedobopoxorevavulofe.pdf
- http://fine-cottage.ru/userfiles/file/kutiwip.pdf
- https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/ic5o0aj9q8cg6ovpi7athjt0g6/96580959587.pdf
- https://rijst.nu/userfiles/file/fidusififomaxaguwapixugo.pdf
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/bc7e0421b7a45f6b0100bb5828f70d36/toduzafagavudovulelawut.pdf
- http://unnatiwelfareorganization.com/ckfinder/userfiles/files/21375039542.pdf
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/e504f29d13416712542ed0de03a07395/9647915051.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b32430d3a44---zoxexe.pdf
- https://baxsporthorses.nl/userfiles/file/64468988119.pdf
- https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/2c8f43ce5e930f8102e1968754a02fe3/zesanebakizepuxajego.pdf
- http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/29094302183.pdf
- http://almar-bus.pl/userfiles/file/29652611848.pdf
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000da89.bin43d0d2c0b5cd231c548452ba8e8a9510791e2adc807e66e9412fc5c32b147897 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA89 | 10640 bytes |
font_01_sfnt_off0000f2e8.bin93bf5705181dd338bb4ce584e3b4eb7808e59002c3af4dea57a3d408c0a74551 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2E8 | 2420 bytes |
font_02_sfnt_off0000fd4f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD4F | 16792 bytes |
font_03_sfnt_off00011561.bine2b59dd8d5123a4c9153baf5ccbb8b05ff1b9b961d593891b905fe02845cc953 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11561 | 17304 bytes |
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