MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The presence of ML and ClamAV detections, along with the 'Callback phishing phone lure' heuristic, strongly suggests a malicious intent to deceive the user. The embedded JavaScript likely facilitates the redirection to these malicious URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://crysiq.ru/uplcv?utm_term=the+sparrow+book+pdf PDF link annotation
- http://giftboxvietthuy.com/upload/ck/files/mogenerar.pdfIn PDF document text
- https://shinko-tw.com/UserFiles/file/82531875102.pdfIn PDF document text
- http://atletika-pardubice.cz/files/file/61869743909.pdfIn PDF document text
- https://vetregistr.com/ckfinder/userfiles/files/13257364346.pdfIn PDF document text
- https://ezastupitelstvo.sk/editor_uploads/system/files/68978457763.pdfIn PDF document text
- http://ufnk.fr/app/webroot/files/file/muvijamatevusemi.pdfIn PDF document text
- https://abhrian.com/userfiles/files/ronaforifulupexesafijaviz.pdfIn PDF document text
- http://www2.grupoksl.com.br/js/ckfinder/userfiles/files/9653963949.pdfIn PDF document text
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/898e859b3120bcff45a0c7ddfab2a99c/86378932407.pdfIn PDF document text
- http://quimis.org/js/ckfinder/userfiles/files/fifuvak.pdfIn PDF document text
- http://www.neoneophytou.com/ckfinder/userfiles/files/76580128598.pdfIn PDF document text
- http://jszl-rolls.com/filespath/files/20210906032322.pdfIn PDF document text
- https://movie2book.com/userfiles/file/66576709489.pdfIn PDF document text
- http://cocoon-source-harmonie.fr/public/file/53981906416.pdfIn PDF document text
- https://matrixx.lu/images/tirinusetesiwobudapak.pdfIn PDF document text
- http://sieuthibds.net/images/files/81434878802.pdfIn PDF document text
- http://brixtontaxi.com/survey/userfiles/files/zoramupibe.pdfIn PDF document text
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/mcv8m8o1vkphgqqo6n7s1hmqq5/37620808664.pdfIn PDF document text
- https://penzionradvanice.cz/res/file/zimufefurep.pdfIn PDF document text
- http://kaushalacademy.org/ckfinder/userfiles/files/pafevefadovunufidipusawi.pdfIn PDF document text
- http://tpokebar.com/uploads/files/66796060709.pdfIn PDF document text
- https://sin-wa.tw/app/webroot/userfiles/files/tovaz.pdfIn PDF document text
- http://sanchariglobal.com/userfiles/file/110448983.pdfIn PDF document text
- http://jaluzipro.ru/public/userfiles/file/bojiz.pdfIn PDF document text
- http://lilipoupoli-drama.gr/lilipoupoli/js/ckfinder/userfiles/files/juwasinadolap.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_off0000b2fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2FB | 14672 bytes |
SHA-256: a70ffb2b3bc194285469a1993d129f08f1e4129c0dda848dbd697ecb770d1496 |
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font_01_sfnt_off0000d7f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7F7 | 10536 bytes |
SHA-256: 3de56976fe392b0c6547f93812563d34e75757cfb0a3bb41fa3eede87790801c |
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font_02_sfnt_off0000eff5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFF5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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