MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=android+debug+apk+not+installed PDF link annotation
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d26865d9e7---96965127311.pdfIn PDF document text
- https://eobliecky.sk/userfiles/file/guzodaxemeralar.pdfIn PDF document text
- http://ahchala.com/img/file/73156163633.pdfIn PDF document text
- http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607a982753b38---10910818946.pdfIn PDF document text
- http://avision-italia.com/userfiles/files/zitoguwasevebaba.pdfIn PDF document text
- https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/gai988pudgeqa4nkdot3u4ol77/42057162094.pdfIn PDF document text
- https://bobecoingatlan.com/uploads/editor/file/xilesekoza.pdfIn PDF document text
- https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/7q3v2e5c41s0pcd6mu4iuehi90/83264883561.pdfIn PDF document text
- http://savalis.ru/userfiles/file/volexawobiru.pdfIn PDF document text
- http://aranykoronakft.hu/userfiles/file/57690080693.pdfIn PDF document text
- http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1607a41857ed1a---wuximikugoxoxuvasa.pdfIn PDF document text
- https://ficsllc.com/wp-content/plugins/super-forms/uploads/php/files/edju8o9sn0ju85manj1vbr7v77/13457080058.pdfIn PDF document text
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607dcb55b403e---66220591507.pdfIn PDF document text
- http://aven.su/userfiles/file/datejus.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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_off0000d6dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6DD | 5320 bytes |
SHA-256: 0c6ce532fa8f97cac9302d0ffbde16e2447753e82864520d5b12b4d4b81f73cd |
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font_01_sfnt_off0000e905.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE905 | 11680 bytes |
SHA-256: a502120cce0039af9a29211c0a6d430dc9d951648f933a4bfb606196abdb8d80 |
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font_02_sfnt_off0001113f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1113F | 16352 bytes |
SHA-256: a235935b7da1a3e0dfb4386fa22d70075346861adeac55da3f8f322ddd140fe5 |
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