MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing and trojan threat. The document's content, though heavily obfuscated, appears to be a lure for downloading software, combined with a critical heuristic firing for 'Recovery secret / private key request'. This suggests an attempt to trick users into providing sensitive information under the guise of a software download. The presence of external URIs further supports the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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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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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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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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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://xezojetit.ru/strik?utm_term=chessmaster+grandmaster+edition+download
- https://cdn-cms.f-static.net/uploads/4365545/normal_6040f268f1c12.pdf
- https://cdn-cms.f-static.net/uploads/4472760/normal_60315554efe20.pdf
- https://cdn-cms.f-static.net/uploads/4382430/normal_602002463580f.pdf
- https://cdn-cms.f-static.net/uploads/4402712/normal_601b2915cb267.pdf
- https://tabivivefevevu.weebly.com/uploads/1/3/4/8/134889686/2850644.pdf
- https://cdn-cms.f-static.net/uploads/4495846/normal_602c60af4397b.pdf
- https://takadoturig.weebly.com/uploads/1/3/4/1/134108809/884116e53b015.pdf
- https://cdn-cms.f-static.net/uploads/4481852/normal_6021faf146002.pdf
- https://cdn-cms.f-static.net/uploads/4379606/normal_60571c95cc4a9.pdf
- https://zadivodewereb.weebly.com/uploads/1/3/2/6/132683121/639281.pdf
- https://static.s123-cdn-static.com/uploads/4379485/normal_5fddfc400221b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/013954eb-6684-41c4-93d2-29e52835aee9/70029185129.pdf
- https://s3.amazonaws.com/dowadotiju/15042261260.pdf
- https://s3.amazonaws.com/jodabiladezot/lukumezewemalusosim.pdf
- https://s3.amazonaws.com/polojuliragam/bard_ffxiv_guide_shadowbringers.pdf
- https://uploads.strikinglycdn.com/files/f648487f-3bcc-4bc6-b8f8-8910fda9e773/rovukisabomezesoxo.pdf
- https://uploads.strikinglycdn.com/files/651eddc6-aa62-445d-b1c6-79a23277103b/best_home_printers_2020_cnet.pdf
- https://uploads.strikinglycdn.com/files/8703e263-7b6e-4672-a66e-b7ca6743f690/acurite_thermometer_replacement_parts.pdf
- https://uploads.strikinglycdn.com/files/d6c96c88-0eba-4710-b164-687653774402/3d_animation_software_for_ipad.pdf
- https://s3.amazonaws.com/nupotukig/10920101470.pdf
- https://s3.amazonaws.com/tiniruru/self-reliance_examples_in_school.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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f731.bin9b3974928f895496962733cc514427f3c0aff8fb94e84df3d0c448a27552f670 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF731 | 5236 bytes |
font_01_sfnt_off000108da.bin1a916b67dd773f81b8f8a91abab0fe69a519991e126ca004c7046c4a54ded586 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108DA | 11680 bytes |
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