Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f7b8227b79ff58…

MALICIOUS

PDF

79.4 KB Created: 2021-03-12 12:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8a49f710f860c49ab94f2871d0acb9b9 SHA-1: 10368ef72864b9d6e958aa969cf00dbfbd8752a3 SHA-256: c8f7b8227b79ff58fd44de4f4a2feda7f4e59c8a12b896b68fdf97475e82562c
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 0.9991

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://mezovuduw.ru/award?keyword=animals+and+their+young+ones+names+list+pdf PDF link annotation
    • https://cdn.sqhk.co/tumowara/hgzhbjj/49790701444.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/9Vhfidw/scary_teacher_3d_chapter_2_apk_download.pdfIn PDF document text
    • http://xomapometafa.iblogger.org/bts_stickers_whatsapp_ios.pdfIn PDF document text
    • http://vozivovog.scienceontheweb.net/mukivo.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/hnOgchc/nevomipibego.pdfIn PDF document text
    • https://miwofovewunot.weebly.com/uploads/1/3/4/8/134873206/51e4deebaa9393a.pdfIn PDF document text
    • https://nefolebar.weebly.com/uploads/1/3/4/4/134400051/86d1ea631.pdfIn PDF document text
    • http://nenamusun.iblogger.org/fijovi.pdfIn PDF document text
    • http://valigulepi.scienceontheweb.net/pezoxevisunojotuv.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/mujekox.pdfIn PDF document text
    • http://zolijava.iblogger.org/82771008615.pdfIn PDF document text
    • https://xaxidotuviw.weebly.com/uploads/1/3/0/9/130968933/5921954.pdfIn PDF document text
    • http://devubowoku.mypressonline.com/used_craftsman_5600_watt_generator_for_sale.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/wolawatin/fekezudabe.pdfIn PDF document text
    • http://jimibidubarabus.epizy.com/xabavevelageboxevibesulu.pdfIn PDF document text
    • http://nirenubatimop.rf.gd/humanism_learning_theory_maslow.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/insulin_aspart_novolog_davis.pdfIn PDF document text
    • http://zogosugo.onlinewebshop.net/nolipekateri.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/av_player_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/65784442055.pdfIn PDF document text
    • http://fevedudebe.epizy.com/4004718083.pdfIn PDF document text
    • http://kubapesopujix.rf.gd/52642554649.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/burt_bacharach_close_to_you.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_off0000ebeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEB 5428 bytes
SHA-256: ca5c5754b195bcc4e5e748a8e15452f168fcb16447cd1a730522e381d8aacb7d
font_01_sfnt_off0000fe2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2C 10340 bytes
SHA-256: 36b6c92d44bf37ac76f089ff5ab5d0be3013f8e2a09c82697be8d75a20a8eb33
font_02_sfnt_off00012180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12180 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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