Malicious PDF — malware analysis report

Static analysis result for SHA-256 001baa9bd4a6c27b…

MALICIOUS

PDF

90.6 KB Created: 2021-04-06 06:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e96c7372efe0cc2709188c3e2a55b34 SHA-1: bd5edc3ab1ebd76c30ae4b05761fc25e6d0e4d26 SHA-256: 001baa9bd4a6c27b4e2c9295a618873b09e8ded4d45ba20ba2afbcf184ff2537
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, identified by ClamAV and ML classifiers as malicious. The document body, though heavily obfuscated, appears to be a lure for sheet music, likely intended to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the high confidence detection scores suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/award?keyword=rains+of+castamere+violin+sheet+music+pdf
    • https://cdn.sqhk.co/ridijafugemi/3POQjau/troll_vs_vikings_2_apk.pdf
    • http://axecheat1.xyz/tanigagug9j90v.pdf
    • http://idclick.cash/47777225626fj8dm.pdf
    • https://cdn.sqhk.co/muligumixe/DHNhahf/carson_city_nv_county.pdf
    • https://cdn.sqhk.co/sejejajoxej/8QLbGhi/download_cheat_drive_ahead_mod_apk.pdf
    • http://teplotronic.ru/xobebegipiywp52.pdf
    • http://cabinetsop.xyz/spanish_to_english_vocabulary_worksheetsoz6vb.pdf
    • https://cdn.sqhk.co/gatezoru/8jjjcjd/pisedejubovuliw.pdf
    • http://callipakk2.site/88432044425ed7mf.pdf
    • https://kemadevuweseroz.weebly.com/uploads/1/3/4/8/134878187/dojesawimuj.pdf
    • https://pubogovivewata.weebly.com/uploads/1/3/2/3/132302724/f5d5f3.pdf
    • http://leadtop.co/4450950713rcqkj.pdf
    • http://getveran.site/badujolefwmgf9.pdf
    • https://mewejubakokexal.weebly.com/uploads/1/3/2/6/132681976/goliso.pdf
    • http://odebayitrafikhizmeti.com/kitchen_knives_uk_discount_codehzfg7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b5f169ef-6bcf-4d19-a24b-32bdc9dd7a5f.filesusr.com/ugd/2e79a6_cbf56cb289954f60b4132bad193b8b04.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f3222595-f4ee-458b-baf1-8e6e134c72e9/how_to_put_your_keurig_on_descale.pdf
    • https://d7b50aa0-fea3-4edc-ba9e-4ed0094b0c60.filesusr.com/ugd/7f614e_ed3028b3f289496882b00ca1bbfc7976.pdf?index=true
    • https://0879403c-3be5-48e4-925f-21334a7d5cfe.filesusr.com/ugd/407fcc_ad850033d1834ef2bed59bfe2a5a74e5.pdf?index=true
    • https://e905e09d-7ddd-4aab-833c-73500e817873.filesusr.com/ugd/f4c08b_0c224dacc0d94808ae2dc5d99e6ac3db.pdf?index=true
    • https://3485775d-af35-4505-8fb4-f6750f575e04.filesusr.com/ugd/42f18e_da8a18e5a367470da725dd7c1f4cfc74.pdf?index=true
    • https://uploads.strikinglycdn.com/files/427cecec-6861-4f45-9ee6-656397cc486f/9635776517.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_off00010872.bin
e9945e2d9f95526d445688410927f4f99838237a286de3c29eebead5212b9d86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10872 6688 bytes
font_01_sfnt_off00011f3d.bin
ea51da6f9913865c71c19b7a1219761eecc5f71f7ae5fc8b0bf465b126ff2144		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F3D 5460 bytes
font_02_sfnt_off000131ac.bin
03b51b11e2272c85f8c146691c364b309ce5765707c7d14e1053f5898a89cd0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131AC 12032 bytes

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