Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d9d0a0ea365e7f5…

MALICIOUS

PDF

84.4 KB Created: 2021-03-15 06:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2794231bcb02739daa5686bce6383396 SHA-1: 9ec1efdd677ac84a37c32fd1e7033fcbfbfa0788 SHA-256: 8d9d0a0ea365e7f54e4e5f08d7f85dc2815965a2d442e3a74156a04020f74e5f
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'baarspo.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to software search terms, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://baarspo.ru/wix?keyword=repelis+plus+apk+para+pc
    • https://cdn-cms.f-static.net/uploads/4374983/normal_60159a5697664.pdf
    • https://cdn-cms.f-static.net/uploads/4452206/normal_600b2a33bf1a2.pdf
    • https://cdn-cms.f-static.net/uploads/4467007/normal_602ad15f54b1e.pdf
    • https://static.s123-cdn-static.com/uploads/4450347/normal_5feb455b081a7.pdf
    • https://cdn-cms.f-static.net/uploads/4485173/normal_601e491d672a4.pdf
    • https://static.s123-cdn-static.com/uploads/4471081/normal_5feb02f5ba140.pdf
    • https://static.s123-cdn-static.com/uploads/4460266/normal_5fcf9a26330a8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kabisebax/hoover_wet_and_dry_vacuum_cleaner_instructions.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/gagisovodavaroruga.pdf
    • https://s3.amazonaws.com/kelukakeb/circumstantial_report.pdf
    • https://uploads.strikinglycdn.com/files/97895ef7-6a64-4e77-ace3-42ed071ad833/what_are_dipole_interactions.pdf
    • https://uploads.strikinglycdn.com/files/abc91d89-d2e4-4dee-a5b3-e2cb38c5c765/how_to_work_out_surface_area_of_prism.pdf
    • http://wufizomofoduzin.rf.gd/jegovijuzusizeluvaxopimi.pdf
    • http://zorufuzelal.rf.gd/linkedin_cover_photo_template.pdf
    • http://releboxodaw.rf.gd/pearson_physics_textbook_online.pdf
    • http://puzexexaniledow.epizy.com/certificate_of_compliance_electrical_work_nsw_form.pdf
    • https://uploads.strikinglycdn.com/files/d387b365-965b-4fda-b6ff-fed9c6db7654/the_veil_removed_movie_review.pdf
    • https://uploads.strikinglycdn.com/files/1fc46496-1492-40fe-ae68-346b72c382e8/como_interpretar_una_fotografia_aerea.pdf
    • https://uploads.strikinglycdn.com/files/d7c2bce9-4e7f-42e5-a900-55d002c71c49/confidence_fitness_treadmill_assembly.pdf
    • http://vilulew.rf.gd/management_accounting_journal_articles.pdf
    • https://s3.amazonaws.com/fopalew/ashmead_care_centre_cqc_report.pdf
    • https://uploads.strikinglycdn.com/files/b7a71a83-2684-4fe8-93b2-2438957bc15f/89040849044.pdf
    • https://uploads.strikinglycdn.com/files/7edfe861-f3e0-4776-9c03-1572c054efdb/dekalenusanogozujo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1ae.bin
aae8700dc3f82ed02e9b3d8843ad2a81c137386f717982beda29cbafea22295d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AE 3080 bytes
font_01_sfnt_off0000fcb6.bin
c1a22bce0e4734787b386bd8f90d3b01a9e09f782128a9ea79b193194d46df49		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB6 4996 bytes
font_02_sfnt_off00010dc3.bin
4c6fe7fa3dfb0188481bbcdff86e434747e88241a7edbeed09fcd891ab9b1db8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC3 2408 bytes
font_03_sfnt_off0001187c.bin
1db7b40d3c29344a09d64cb29d7ed3b6d160761dbde221aa9081bdc35898aa7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1187C 12524 bytes

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