MALICIOUS
192
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, including one identified as a malicious redirector. The document body text, though partially corrupted, contains a phrase suggesting a download lure for 'Ctet answer key pdf 2018 download', which directly corresponds to the malicious redirector URL. This indicates a phishing or scam attempt designed to lead users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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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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://cctraff.ru/strik?keyword=ctet+answer+key+pdf+2018+download In PDF document text
- https://site-1036958.mozfiles.com/files/1036958/fiviwuzusi.pdfIn PDF document text
- https://site-1036821.mozfiles.com/files/1036821/derili.pdfIn PDF document text
- https://site-1036871.mozfiles.com/files/1036871/belagopotitojuvogulugev.pdfIn PDF document text
- https://site-1036926.mozfiles.com/files/1036926/59831551287.pdfIn PDF document text
- https://site-1037261.mozfiles.com/files/1037261/kigodekenolomarep.pdfIn PDF document text
- http://files.ouidancema.com/uploads/1/3/0/8/130874305/59d6a4eb0f4fd9.pdfIn PDF document text
- http://wunevaw.airwreckkazillion.com/uploads/1/3/0/8/130814017/kufovuzubiluj-jumupop.pdfIn PDF document text
- http://files.circleoffriendssg.com/uploads/1/3/0/7/130775350/90bec.pdfIn PDF document text
- http://files.passionhouseconcerts.com/uploads/1/3/1/6/131637257/nubuj_jiwijawuromipod.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://uploads.strikinglycdn.com/files/f4a9bc04-787d-4ee2-9998-5bde17d1aa80/11845460068.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/701f4090-8800-4d91-95e7-6887f4aac2f4/serugisamufetafoki.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d48dae39-385d-4519-b6b1-b05f85e7410f/jepukak.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a0564840-ae8d-4569-aa56-f4a3a28473fc/85076899247.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7407/6315/files/vuniribekaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3723/7148/files/71966030087.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5736/2597/files/carteirinha_de_estudante_falsa_em.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9869/4042/files/english_speaking_in_gujarati.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://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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000726f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x726F | 5716 bytes |
SHA-256: c86b33c4d00b775e1d8147625953f89bc8d91c64126b07b78fd52ada546325a2 |
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font_01_sfnt_off00008615.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8615 | 10200 bytes |
SHA-256: 2385b23c1abb55c594b4e41a23ab0fdf2253b058764656ed6ca78e1bcfbf49b3 |
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font_02_sfnt_off0000a911.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA911 | 16212 bytes |
SHA-256: 5a1dd5230255ea44336b568e2238b95318a7a0eb65c4429dd43a0a94346b538a |
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font_03_sfnt_off0000be91.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE91 | 5040 bytes |
SHA-256: 981dce15d75e2b87df8b1212ac3f84e72840c423710dc18836ee322a83b119ab |
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