MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, indicating a phishing or malicious redirection attempt. The 'SE_CALLBACK_LURE' heuristic suggests a callback phishing or tech-support scam pattern. ClamAV detection and ML classification confirm the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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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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://cructi.ru/uplcv?utm_term=ecuaciones+diferenciales+de+orden+superior+con+coeficientes+indeterminados PDF link annotation
- https://prawobrzeze.info/userfiles/file/46678008194.pdfIn PDF document text
- http://formpart.com/upload/ckfinder/files/dikajanolubodude.pdfIn PDF document text
- http://aloeverajuice.cz/files/file/94457004471.pdfIn PDF document text
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1616df78269023---30178710619.pdfIn PDF document text
- http://viral-list-machine.com/ckfinder/userfiles/publics/files/6882653067.pdfIn PDF document text
- http://autosoftware.company/autoresponders_images/files/5694763478.pdfIn PDF document text
- https://irastuff.com/admin/ckfinder/uploads/files/todibixeneferex.pdfIn PDF document text
- https://fullgame.hu/uploads/files/56444007758.pdfIn PDF document text
- http://philboyd.com/36044098288.pdfIn PDF document text
- http://didopack.com/files/petekunawirad.pdfIn PDF document text
- http://pscworld.eu/ckfinder/userfiles/files/86504370236.pdfIn PDF document text
- http://levotst.com/uploads/files/50176055247.pdfIn PDF document text
- https://online-wums.com/files/files/jaxatobefuzewulususib.pdfIn PDF document text
- http://shop-cartuning.pl/userfiles/file/7097177742.pdfIn PDF document text
- http://www.childofafrica.org/media/userfiles/file/65505416924.pdfIn PDF document text
- https://leonardscopysystems.com/home/leonards/public_html/ckfinder/userfiles/files/tegadonezaf.pdfIn PDF document text
- http://nicolalazzarotto.com/userfiles/files/furefuxuzoludojekowu.pdfIn PDF document text
- https://dagvandearchitectuur.be/_files/file/vomelovat.pdfIn PDF document text
- http://dyccpharma.com/upload/files/57797779064.pdfIn PDF document text
- https://brawlcall.com/ckfinder/userfiles/files/66028295687.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_off00016b53.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16B53 | 10864 bytes |
SHA-256: 4b3939ca716c60ed4e24bf1968f16bdd1860efdc342072203476a9c1d2d559d0 |
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font_01_sfnt_off0001845e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1845E | 23516 bytes |
SHA-256: 8ecd9c23407af6b02bcc2b9a10593d4415456bca16141ae0d483c333308e8a8e |
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font_02_sfnt_off0001c0d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C0D8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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