Malicious PDF — malware analysis report

Static analysis result for SHA-256 e366f1f3b69caab9…

MALICIOUS

PDF

75.7 KB Created: 2021-02-14 05:18:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 24e4e52e4703433a4e733e16eff95af0 SHA-1: 47049dfd0e472d1bc738521d1e6641649b196e5e SHA-256: e366f1f3b69caab945edd038e9245a927f73994f88a8838c3cc1b5eeb72ada8a
96 Risk Score

Malware Insights

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

The sample is a PDF file flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. An embedded URI points to a suspicious domain, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of an external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=quien+es+jesus+para+mi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384325/normal_601dca35deea2.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/Shchajg/8_ball_pool_app_download_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/biluvetizom/x39Dgjn/wavoges.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408478/normal_5fe09777e0ce7.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/iiMRkzG/15069778483.pdfIn PDF document text
    • https://tefafovok.weebly.com/uploads/1/3/4/5/134588422/mujorixekovovuj.pdfIn PDF document text
    • https://limogugopowara.weebly.com/uploads/1/3/1/6/131637055/3292601.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375705/normal_5ff5559a21da9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459174/normal_600f989625a00.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/HhgvFjf/slimify_super_slime_simulator.pdfIn PDF document text
    • https://daxusumupazi.weebly.com/uploads/1/3/4/7/134702932/dc4c42bddf0.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/muvojugejoxip/lagu_binks_no_sake_versi_luffy.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/gereke.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/36604048006.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/past_tense_worksheets_for_grade_8.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_off0000d47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47F 4760 bytes
SHA-256: 1b5b2f7d89cb30f1381fa3c65d912cc56fb20cf8e0a2925db6e64574e681d8f2
font_01_sfnt_off0000e486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE486 14708 bytes
SHA-256: 99b1d745fd4e004f93514e3ed1fbdf5b5e87e2f03852685e32e7abc4c073a44a
font_02_sfnt_off000112b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B6 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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