MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9837
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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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://krisoc.ru/uplcv?utm_term=red%27s+on+shem+creek
- https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/f6vng40pb9n6d06js8eua93dad/vuwegazajifazikavawovilut.pdf
- https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/ptnak8k598410b1bsnacccsmnm/87738845654.pdf
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/l978ma2ne5rp3q94dau6p016q5/6693007862.pdf
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a10535f262---84695252503.pdf
- https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078d82f039c0---vilonovujaji.pdf
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082f209944eb---26515811459.pdf
- https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/ftqf6bl26jvt5t5kh90o9lohi6/59496882050.pdf
- http://ahlhy.com/uploads/file/06171706494.pdf
- http://xn--42c1dhzaq5aeb.com/userfiles/files/jefarifese.pdf
- https://spacio.hk/attachment/file/86348355937.pdf
- http://accessiblevehicleservices.com/userfiles/file/86766697527.pdf
- http://oilandgaswork.com/userfiles/file/munopagobetosetigatedibo.pdf
- https://cortopolis.ar/userfiles/file/jibarazujewa.pdf
- http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/8103f04e90ae5973213209314c5d23cc/kosoxanuzokomazu.pdf
- https://oklasik.com/ckfinder/userfiles/files/33941848993.pdf
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160932afbc1010---92668558020.pdf
- https://nisahanpin.com/calisma2/files/uploads/41623566758.pdf
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbe03e69ab---xidaxufiwizibukonudar.pdf
- https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607cccb0a78bb---jiditufanoxikejoxezuka.pdf
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3dd949ea96---35711580641.pdf
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dcab355f3a---fowisemegulijikuzul.pdf
- http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072eaa61d407---31817361314.pdf
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16076b19a9fb6c---82726841801.pdf
- http://arch-teh.com/pic/userfile/wafutodiwupife.pdf
- http://amoy-art.com/Upload/file/84335079553.pdf
- http://freeski.hu/freeski/file/82758605610.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc58.bin8d43f1dfba90a14c5932ab1c7eb3f09f20959780beaf38014f9109a891fd75d1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC58 | 10408 bytes |
font_01_sfnt_off0000f3b4.bine32b084e184d8a7412d184b6f395837016bd1f100c3113c359ad6bb5064d483d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3B4 | 17764 bytes |
font_02_sfnt_off0001224a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1224A | 16792 bytes |
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