Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e3bdb2d1b7d33b…

MALICIOUS

PDF

73.6 KB Created: 2020-12-05 02:24:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ed3fab67e36f6634e963099d4a484e41 SHA-1: 18b0324e18844cca5c79c75e83b0a8be3324a091 SHA-256: 52e3bdb2d1b7d33bb3f60583c2ab827be42d753a00b8b1dd8d4138b28ad23241
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain. ML and ClamAV heuristics also flag this file as malicious, likely phishing-related. The embedded URL is the primary indicator of compromise, suggesting an attempt to redirect the user 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://trafftec.ru/strik?utm_term=chill+zone+discord PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f8deb7864b90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370078/normal_5f9a4dc95faab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383698/normal_5fc76880c47ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387590/normal_5f98e91f74b32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383464/normal_5f8fdfa1a263a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/metowukebosoxoxuwesito.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4a28139af037644e7e6/t/5fc544cd2dd96f59189a9a1f/1606763728312/ravi_jagadeesan_harvard.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf599664571256543214c0/1606375830574/nalojefojiwe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6eca3aa0dc1643a2e47a4/t/5fc9914d87b36f46d4f758fb/1607045453616/stress_control_norbu_game_breathing_black_friday_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc169f3e2fce462bc8f8ca6/t/5fc48d0fe18c5c478e8d0a3d/1606716687550/vobipevolugoza.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/aradhana_aradhana_song_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1f1f61e25426e101d040/1606295327594/the_crucible_true_or_false_quiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e5b8a3bf4b14aba92f9c/t/5fc1a2e33c02f22b9d4afc8c/1606525669741/5644985661.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_off0000e39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39D 4772 bytes
SHA-256: 3b36760b696caf314f8ae8e006bec05650658d889ee37bf0a301d15aa7560c6f
font_01_sfnt_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 11072 bytes
SHA-256: 91f046a2f6fc6c21dca78db69c4596728174cca5278a9bce00ac5a74d1e124e0

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