Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c61c6c7cb415302…

MALICIOUS

PDF

79.8 KB Created: 2021-03-12 05:02:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f37c24e47a5640d1b9b43c091cf7f8f SHA-1: 74f328bba365e8e47a059e40f7ac3714d40a869e SHA-256: 9c61c6c7cb41530219f212d4fb45adec2777296a88e78f5f010798d3866d355c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to product information, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://maypoin.ru/wix?keyword=keurig+k-elite+cup+sizes
    • http://pozufopajosel.mypressonline.com/benowewufu.pdf
    • https://cdn.sqhk.co/ruvonusebex/h9hgiaH/pudajuwebolasusunafelip.pdf
    • http://jafoxidulez.mypressonline.com/9351864202.pdf
    • http://fosonelotila.medianewsonline.com/32579095457.pdf
    • http://medazuxa.mywebcommunity.org/epson_xp_6000_manual.pdf
    • http://wufamega.scienceontheweb.net/tokyo_ghoul_season_3_opening.pdf
    • https://cdn.sqhk.co/raguwubives/Ehgcif7/snappy_tomato_pizza_burlington.pdf
    • http://zugasanuko.getenjoyment.net/zumatadere.pdf
    • http://gejokakop.mygamesonline.org/jetisobajoxuranuzupi.pdf
    • https://cdn.sqhk.co/suwuwewazaka/U7gi1ic/jifevuxo.pdf
    • http://wifisef.medianewsonline.com/77465497082.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://bemabam.myartsonline.com/pretty_little_liars_episode_guide_season_3.pdf
    • https://uploads.strikinglycdn.com/files/3544d67c-f184-4d8f-8e6b-ed8f4c338bf6/32244390258.pdf
    • http://kosezofejesuxef.atwebpages.com/70579324531.pdf
    • https://uploads.strikinglycdn.com/files/8b338196-a94c-4df5-839b-1f3d4229c634/rozanan.pdf
    • https://uploads.strikinglycdn.com/files/3adbc652-6454-48c4-a35c-f3c91f6cd1cb/netgear_docsis_3.0_16x4_ac1600_wifi_cable_modem_router_c6250.pdf
    • https://uploads.strikinglycdn.com/files/66186f66-5705-4482-8346-8abf8205bf44/duzadijutu.pdf
    • https://uploads.strikinglycdn.com/files/ffc62842-73f4-4cd5-a1ca-56a8b3d233e8/51311220528.pdf
    • https://uploads.strikinglycdn.com/files/a9eb4c81-42dc-40c4-a03e-f0c51f29b6c3/gogolipumis.pdf
    • http://liduvitulugug.onlinewebshop.net/how_tall_is_neil_degrasse_tyson.pdf
    • https://uploads.strikinglycdn.com/files/a1a35318-e1e2-44c3-a9e1-8ecae426ab4f/public_administration_master_degree_in_canada.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed63.bin
3aff8d32eecee7cb0aab01355b415e8118caf6b016a2b60597d37e462141965b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED63 4672 bytes
font_01_sfnt_off0000fd79.bin
00cea5884331fbb1c4ce0f9236abd0f882992a583b0bbf933f5e6cf123c82a92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD79 11276 bytes
font_02_sfnt_off000123e7.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123E7 4324 bytes

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