Malicious PDF — malware analysis report

Static analysis result for SHA-256 853f58f40042b3c6…

MALICIOUS

PDF

77.5 KB Created: 2021-04-02 00:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a6731921e57fa6faac6111d1c9d979ed SHA-1: ed3bfba0c73726f11c1f53edad202ad85d123f4d SHA-256: 853f58f40042b3c6eb554fea1fbecde772efb36554a7bb90cb7ebfc531dc34af
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9989

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://crophysi.ru/123?utm_term=power+rangers+movies PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373281/normal_602e3f4933143.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409254/normal_5fedd223b0d01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467564/normal_5fe552d4adb7f.pdfIn PDF document text
    • http://islta.fun/how_many_types_of_fault_occurs_in_transmission_linerhwb0.pdfIn PDF document text
    • http://lg-supportteam.com/77962940232h98vs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404750/normal_5fc5b563d8dbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407576/normal_601b184002197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_605fe840e75de.pdfIn PDF document text
    • http://com-copyrighit.com/fadawiwolixisudobafn2jnm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446394/normal_5fd30aaa2c512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477910/normal_60463628334cb.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://uploads.strikinglycdn.com/files/8f1f8c39-61f0-4a31-ad47-cfb1efed81ff/madedufezodarifa.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/kojimikil.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/non_collusive_oligopoly_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01915028-8f20-4fca-9872-0bcf9ed171ca/20537619843.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98c6e7e4-6a2d-42d1-8538-545830505b12/sevipizolikenazowoxanexoz.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/tamil_live_tv_channels_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/zorovodakaru.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/71390705349.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/how_do_you_fix_a_clogged_insinkerator.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/how_can_you_convert_a_to_excel_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfe0cfed-37d4-4f28-a5cf-57a76fdf5428/wurudidop.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/bbg_free_week_of_workouts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/838f4c1e-03d3-4656-97e6-4528b7507f9e/jadegujejarugexew.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_off0000e352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE352 4836 bytes
SHA-256: 693d0bc4beca729266961738f6c2178baaf95bb5a4386d347d9096cc337dcb74
font_01_sfnt_off0000f3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AB 11472 bytes
SHA-256: 1b1286c585a7790fe0e6c26d33c3d46478ba33c4c70d1ac78b5e06b26b97125a
font_02_sfnt_off00011a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A57 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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