Malicious PDF — malware analysis report

Static analysis result for SHA-256 881c566d0b78fb87…

MALICIOUS

PDF

85.0 KB Created: 2021-03-13 12:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 247ce1dca5d1f56e939468e51fe0f03f SHA-1: b5597a805875da2aca24939bcadd3fca89b0af2a SHA-256: 881c566d0b78fb87c2c4bab4ece3bdba519b9857862441ec6876f71b586dba96
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, and contains an embedded URL pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to a 'Nespresso d50 user manual'. The presence of embedded URLs and the overall malicious verdict strongly indicate a phishing attempt to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/wix?keyword=nespresso+d50+user+manual PDF link annotation
    • https://cdn.sqhk.co/nejajevafode/V53hjbZ/metal_slug_2_game_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wigalefu/fpjdhT3/cotton_candy_ice_cream_recipe_without_syrup.pdfIn PDF document text
    • https://cdn.sqhk.co/simirides/84jbgjj/18527341869.pdfIn PDF document text
    • https://cdn.sqhk.co/sisuriwul/gwuUxhf/34732603256.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/sihijx6/64913056414.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393485/normal_5ffc2b6b02972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495841/normal_6017427c7a990.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459175/normal_600d520e70f55.pdfIn PDF document text
    • https://cdn.sqhk.co/navififoro/DiSCjid/ginonagegalo.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/YgijiBl/best_sensitivity_for_pubg_mobile_oppo_a9_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rimejiguvif/vidya_vox_be_free_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9101718-0e1b-484f-bce9-2e86f929840f/will_cyberpunk_2077_have_mods.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/free_whatsapp_for_pc_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/485beebb-3537-406c-9b07-c23a166e4a87/simamorejigivu.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/one_thousand_and_one_nights_movie_2012_online.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/wugutezetoxasamufaxedev.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/41388373855.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/stephen_king_book_to_read.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B6 5096 bytes
SHA-256: 0dbd57ff54a81f699a3a92ea60eddae763d21f7cb9f1d3a6ccaefdcd562482dd
font_01_sfnt_off000112ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112EA 11196 bytes
SHA-256: 15788346e4743378300838d14caf3328dcf37b08e2e8ef64fdbc055add3e7478
font_02_sfnt_off0001390e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1390E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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