Malicious PDF — malware analysis report

Static analysis result for SHA-256 0446df3523acdbc3…

MALICIOUS

PDF

87.5 KB Created: 2021-04-08 03:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 16c742cd848dfbbce49b0785236855ed SHA-1: 84420f9cbfe8f1d14a4df4abd28f1a3cfb58419c SHA-256: 0446df3523acdbc37417b7f0fda41e8bc41be80b785da2c3562cfdbc7b1bd0af
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/wix?keyword=theory+vs+law+worksheet PDF link annotation
    • http://dektesheff.xyz/acrylic_sheet_supplier_in_quezon_city1iss7.pdfIn PDF document text
    • https://cdn.sqhk.co/gagufatemo/haiahb8/talking_angela_games_online_play.pdfIn PDF document text
    • https://cdn.sqhk.co/tazarufavixa/33heAje/genorijejepejison.pdfIn PDF document text
    • http://ruluzuzadol.mypressonline.com/80576322779.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/haijyKg/pocket_watch_drawing_step_by_step.pdfIn PDF document text
    • https://cdn.sqhk.co/bexexoro/hgjjbhj/golden_spike_rv_brigham_city.pdfIn PDF document text
    • https://cdn.sqhk.co/lewatesudo/g7VpCRm/12542873504.pdfIn PDF document text
    • http://gladkoe-telo.xyz/79070893353q5dri.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/makalah_budaya_perusahaan.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/dhbgiXt/99799133817.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/gowupuzokowuxes/bajaj_boxer_x150_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/kathi_tamil_movie_free_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/tabogipa.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/tuvunoni.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/jasoxibuvetuf.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/40145310172.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF637 4672 bytes
SHA-256: 07e423d42a0a8d66c9173c67e404da53cdbddcb944f71271239b0c4f3b2f5501
font_01_sfnt_off00010648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10648 11272 bytes
SHA-256: 26a7f8de5344fec582ca8af45ca4e6c1a7dfec7a990ffe77cd74b6b09216f16b
font_02_sfnt_off00012cff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFF 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_03_sfnt_off0001422f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1422F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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