MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to external sites, some hosted on compromised CMS uploads or disposable domains. The presence of 'utm_term' parameters suggests a phishing or spam campaign. No scripts were extracted, but the overall structure and URL distribution strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://infrive.ru/uplcv?utm_term=adcap+hack+2020 PDF link annotation
- https://udruga-invalida.hr/files/gozibivosevazekujozetude.pdfIn PDF document text
- http://arabic.cz/ckfinder/userfiles/files/wenanogijokixirenezota.pdfIn PDF document text
- http://levant-tekstil.com/other_files/File/79113591761.pdfIn PDF document text
- http://movitecnic.fr/ressource/site-image/files/zoforota.pdfIn PDF document text
- https://yenhuy.vn/upload/files/32796665211.pdfIn PDF document text
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f077857bb6---redaluwotajanozepajimuko.pdfIn PDF document text
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16132ffd6ee367---gogisuda.pdfIn PDF document text
- http://goldendazzle.com/upload/quangtri/files/87249425365.pdfIn PDF document text
- http://csc0851.com/userfiles/file/20210928094634_w7u64s.pdfIn PDF document text
- https://emilline.dk/ckfinder/userfiles/files/65779418643.pdfIn PDF document text
- https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/dd0e46614eb7c1146dfb26bd812b8baf/46841907275.pdfIn PDF document text
- https://orangerun.re/photo/files/21395659990.pdfIn PDF document text
- http://caudafotografia.com/userfiles/files/luwanoxepibefusom.pdfIn PDF document text
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613de430e9625---xukugo.pdfIn PDF document text
- http://carbontuning.ru/file/xabowom.pdfIn PDF document text
- https://perfumes.dropship-tracking.com/userfiles/files/jemogazuwufijixinuko.pdfIn PDF document text
- http://anhuifan.com/upload_fck/file/2021-9-5/20210905025431994696.pdfIn PDF document text
- http://firewheels.pe/userfiles/file/27166909157.pdfIn PDF document text
- http://wccflooring.com/userfiles/files/71798544553.pdfIn PDF document text
- http://imobilestore.de/userfiles/file/xivapagazem.pdfIn PDF document text
- https://hunglivet.com/uploads/files/202109072253596765.pdfIn PDF document text
- https://norservis.com/files/files/20801554668.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_off0000ad07.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD07 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c519.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC519 | 16460 bytes |
SHA-256: 87f330214ebbd8911b589c0262ce215b7588d45d33ced6784b1de90984712564 |
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font_02_sfnt_off0000eec6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEC6 | 10064 bytes |
SHA-256: 8902e08f9d122125827dd197fd1e103d1007a68be83fabe46157be3e9ce9453f |
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