Malicious PDF — malware analysis report

Static analysis result for SHA-256 a97815a6f882ac77…

MALICIOUS

PDF

487.9 KB Created: 2021-03-20 18:14:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 63ad27b9446295243fc753282ae2b87b SHA-1: c239b66c7205a43e842d79922409df9843f7aa29 SHA-256: a97815a6f882ac776044e23fc3932275c2266a49b75bfec2890b91e8d984bf86
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. 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 0.9254

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://pakurematumomu.weebly.com/uploads/1/3/4/7/134764434/rofifodivurakew_xefoxipixe_rofifuxusagefur.pdf.
  • 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://jumiwimov.ru/123?utm_term=hallmark+cards+australia+annual+report PDF link annotation
    • http://poxamudowodet.22web.org/55130301559.pdfIn PDF document text
    • http://extraterrestrials.space/tatobudibisojixibejilnb16m.pdfIn PDF document text
    • http://idealica-italy.site/berserk_manga_download_mega2vz56.pdfIn PDF document text
    • https://pakurematumomu.weebly.com/uploads/1/3/4/7/134764434/rofifodivurakew_xefoxipixe_rofifuxusagefur.pdfIn PDF document text
    • https://zonidazoledod.weebly.com/uploads/1/3/1/0/131070441/7577067.pdfIn PDF document text
    • http://jushq.club/lg_remote_not_working_ukwpheu.pdfIn PDF document text
    • https://tefovaxosu.weebly.com/uploads/1/3/1/1/131163863/silok-zobelemulagod-wimusiwe.pdfIn PDF document text
    • https://keminozabigorez.weebly.com/uploads/1/3/4/8/134886120/jabodopu_simipajopemofek_tepezejaziwuse_jojudotagoruwo.pdfIn PDF document text
    • https://nokesopupikes.weebly.com/uploads/1/3/4/7/134767934/wisitejatepo.pdfIn PDF document text
    • https://jeketivogusu.weebly.com/uploads/1/3/1/3/131398097/wovulokaturaju-fasekotesi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xukenefurirog.epizy.com/bell_hooks_all_about_love_abebooks.pdfIn PDF document text
    • https://8ab1a2d5-e5b1-44c5-a28c-e09959565f0d.filesusr.com/ugd/eb712c_351fc9828a644d35b866a95d96fca81b.pdf?index=trueIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_6f6e235cc9574bcd8fd418170a660d0d.pdf?index=trueIn PDF document text
    • https://05e27880-d5e1-4d3d-8428-ba943e9300bc.filesusr.com/ugd/b56239_ca51797cff134a73b98821c03ab402b0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/taclane-micro_kg-175d_encryptor_price.pdfIn PDF document text
    • https://3c86e5df-9a55-47dd-9d5b-c207b25ec6cd.filesusr.com/ugd/72bf36_677a790d71d64d8c8da0eb9b722f7c38.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/sas_ods_excel_center_output.pdfIn PDF document text
    • http://naremijex.epizy.com/redumudokoxavaw.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000753b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753B9 5244 bytes
SHA-256: 88dbf8ff7fec2ed931cf4666091cee7b803fb2a1b3881fd92854888fd4380d3c
font_01_sfnt_off00076574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76574 11912 bytes
SHA-256: dc4b0084df5a6653e72ad81acb64d4b720f00c57bf187171e380c057ddff00bc

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