Malicious PDF — malware analysis report

Static analysis result for SHA-256 8609ef0dd2770485…

MALICIOUS

PDF

134.5 KB Created: 2021-04-23 12:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 40dcfefa3cece7ed034f3ece93ebdca1 SHA-1: 5f3f03d444e16a7d0b7073e99d7118f0b83446c4 SHA-256: 8609ef0dd27704859ee1e7aa83640f643e7d1fa2d41dcf21ff560e28ccd6be67
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to 'class c airspace'. No scripts were extracted, but the presence of a malicious URL indicates an attempt to redirect the user to a harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=is+class+c+airspace+msl+or+agl PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374371/normal_60353a3c04625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451766/normal_5fe6d9dfabc6e.pdfIn PDF document text
    • https://cdn.sqhk.co/xarobumevux/igiathe/14310889628.pdfIn PDF document text
    • http://alluniversity.fun/amma_videos_for_whatsapp_status_in_telugub9xeq.pdfIn PDF document text
    • https://cdn.sqhk.co/kososojog/hjsjdeT/59771297464.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/ehgugdf/offline_videos_ios_app_alternative.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/bhgjdgd/easy_screen_recorder_windows_10.pdfIn PDF document text
    • http://iranomics.com/how_to_enable_ladder_runewords_in_single_playerm335a.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/fijhfhe/lepot.pdfIn PDF document text
    • http://workmonster.net/diablo_3_necromancer_pet_build_season_21p41wt.pdfIn PDF document text
    • https://cdn.sqhk.co/naxisedomak/5JGgjVx/helicopter_rides_grand_canyon_west_rim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456676/normal_604496eca9487.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/lopadivupudexa/xozumi.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/32287463858.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/greater_chennai_corporation_death_certificate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef429d86-24b2-49d2-b6dc-eef2bb9506e9/jvc_kw-xs68_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79a1eb59-a198-44b1-96fe-ed3256e1eaa6/flowers_for_algernon_quiz_part_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed489e1e-ceaa-439f-8689-11fcd7c3c208/oster_bread_machine_ckstbrtw20_paddle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7405bf9f-4b13-4604-a6ba-87ffc80fbd3b/how_rich_is_brandon_sanderson.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_off0001c918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C918 4792 bytes
SHA-256: 6ccaab70dd3e95b82d4a5bec88af474c109178fcd065a37780d7a856831084f5
font_01_sfnt_off0001d950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D950 10440 bytes
SHA-256: c31830f1a5686ec68480fb8b131f897a5b91d3fd97ad7fbd746505d3cdd1b991
font_02_sfnt_off0001fcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FCD4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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