Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e6e784ba30cd20…

MALICIOUS

PDF

84.4 KB Created: 2021-03-20 18:14:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 22444c757fefa7f7517bbd8ac48c8903 SHA-1: 5299980691b531ba6930310ed050ce4634f183e7 SHA-256: 03e6e784ba30cd20170a25de14d87743d7c3d40649ecf5594b44f5788dff44d0
96 Risk Score

Malware Insights

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

The file is identified as malicious by a machine learning classifier and ClamAV, with a critical heuristic firing for ClamAV detection. An external URI heuristic points to a suspicious URL, 'https://jumiwimov.ru/award?keyword=ni%25C3%25B1os+albinos+pdf', which is likely used for phishing or to serve a secondary payload. The document body is heavily obfuscated and unreadable, but the presence of embedded URLs and the overall detection profile strongly suggest a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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/award?keyword=ni%25C3%25B1os+albinos+pdf PDF link annotation
    • https://cdn.sqhk.co/bapuxilav/s1ggcjg/86192486739.pdfIn PDF document text
    • http://artelamp.store/computer_science_and_systems_engineering_placementsc777h.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/iabihOk/turn_off_notification_sounds_android_10.pdfIn PDF document text
    • http://laulu-go.ru/st_caste_list_in_mpzpj0a.pdfIn PDF document text
    • https://cdn.sqhk.co/nelufebo/edrvgiZ/coldplay_video_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kozutani/WF0uZjb/33417254833.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/BSgeHjj/poviwevewazefinu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d9f6b2e-df37-413b-ad3b-14bc05881a02/wcf_vs_web_api_which_is_better.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/blessed_be_your_name_clarinet_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40b86e52-f591-4197-b659-b45e0ecdd747/24755945183.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/codycross_answers_group_142_puzzle_2.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/90064592702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/563748c4-b7f6-489a-b324-9561ee372fa1/tanogefakasexosegexirezap.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/find_great_deals_on_used_cars_hastings_ne.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/compatibility_report_natal_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e09896f-bf1f-42c0-a24c-f8211646a6b0/legopof.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/gebevab.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/vebazofepimubirininoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0f2a26a-c4ba-4100-9f03-d700f5928ce6/avent_sterilizer_instructions_3_in_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01cb26a3-30f6-4788-ae39-88ee49d962c9/bell_sagemcom_fast_5250_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/fibibevosakox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78449ba3-7803-4b6b-915c-5bb17b6cf7f9/95576907095.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/70315284277.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/menudeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b3f256-1783-43cc-93c8-ba0486a11eb5/76120563588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3b489ea-8db1-4b74-8778-e03754226d94/chrono_cross_endings_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F3 5260 bytes
SHA-256: 4d85b1844db81aaa664a97160c75936cda684c03301a5b46af84747c48723bea
font_01_sfnt_off00011aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA4 12472 bytes
SHA-256: 16956d8742f595b0794d15406208ab6e0f134f5136b7507f7a8d89c85f49a005

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