Malicious PDF — malware analysis report

Static analysis result for SHA-256 676660cfb9510c88…

MALICIOUS

PDF

395.9 KB Created: 2021-04-06 18:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4c9a13fa49381bc1ea1dd2181a41f3a7 SHA-1: f5e04d8c81c58e70753e5d8b8cf5b65b28572617 SHA-256: 676660cfb9510c880f5ece75990423f76a5bda90a3a1ea07193de7bf1c398fa1
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9645

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/wix?keyword=rancor+raid+guide PDF link annotation
    • http://ritixibetono.mygamesonline.org/algorithms_sanjoy_dasgupta_solutions_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/hfLWghR/tidulu.pdfIn PDF document text
    • http://serarudipiwuvon.mypressonline.com/el_hombre_como_unidad_biopsicosocial.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/86990324722.pdfIn PDF document text
    • https://cdn.sqhk.co/biluvetizom/9cgeMev/import_costing_sheet_template.pdfIn PDF document text
    • http://bt-management.website/harry_potter_goblet_of_fire_illustrated_booksx91fp.pdfIn PDF document text
    • http://teachersaid.fun/project_cost_analysis_template_in_excelfy3kv.pdfIn PDF document text
    • http://vufilulojusabid.iblogger.org/video_sales_letter_powerpoint_template.pdfIn PDF document text
    • http://ultra0.space/fakuxuxutenebato1ayiu.pdfIn PDF document text
    • https://cdn.sqhk.co/pulafefer/jejKOii/zuredamu.pdfIn PDF document text
    • http://xojitufos.66ghz.com/channa_mereya_full_movie_hd_bluray.pdfIn PDF document text
    • http://idealslimitalia-official.site/63728962201fezo1.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/fidihFE/contract_killer_2_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/ghidL1K/girl_games_mermaid_princess_dress_up.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zisafaziga.epizy.com/aashto_geometric_design_manual.pdfIn PDF document text
    • http://xijidejejinenoz.rf.gd/tizovisagijevado.pdfIn PDF document text
    • http://zuluduk.epizy.com/vocational_english_for_construction.pdfIn PDF document text
    • http://rolubumemetujin.atwebpages.com/35340081610.pdfIn PDF document text
    • http://selitesavuweg.epizy.com/iqra_hanacaraka.pdfIn PDF document text
    • http://pokukalaso.rf.gd/tururofiwudik.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_off000577a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x577A9 22740 bytes
SHA-256: d64f65f2b7bb62f5203a448203c754004d25cf1a9eccb2041d8a8ccfd753c4d2
font_01_sfnt_off0005c087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C087 4904 bytes
SHA-256: 43b9f262b8027c98a9483af83cc305674f9e24f562cd8aca6a24d69a68efdb1b
font_02_sfnt_off0005d149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D149 19320 bytes
SHA-256: a617ea0d7614ccdcd830406185bb621b803620133325d5f2e68a824101812d10
font_03_sfnt_off00060a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A54 16252 bytes
SHA-256: 05bb007068516c24842d7f4862c39c4549e4b503da32a1401d1b9dfedd44a307

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