Malicious PDF — malware analysis report

Static analysis result for SHA-256 9287809b08d52780…

MALICIOUS

PDF

81.5 KB Created: 2021-04-06 11:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 067807af82d6f45a54dd10a59ccdbb52 SHA-1: 551163310b79bc2b3009e46a7e8f58bc7cc5f443 SHA-256: 9287809b08d5278039cd2c5e6e234d3a26d4e6783cddc60b21539b0b66f221b1
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 0.9998

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://nipisod.ru/award?keyword=administra%25C3%25A7%25C3%25A3o+de+medicamentos+intramuscular+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5fdbfb3c2b4b0.pdfIn PDF document text
    • http://takipleskazan.org/selizazidizenezulafipdv3qu.pdfIn PDF document text
    • http://com-copyrighit.com/sheet_metal_fabrication_jobs_in_dubaidotg4.pdfIn PDF document text
    • http://nesebonuvobeju.getenjoyment.net/bhartiya_samvidhan_in_marathi.pdfIn PDF document text
    • http://prodive.su/lowugigonuzuwumikvmpzz.pdfIn PDF document text
    • http://ighelpcenter.xyz/vakodivex26b4m.pdfIn PDF document text
    • http://websporizle3.com/firexeraroxasidavim4jubg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426416/normal_5ffb595cd644f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_d813d295caf44a018b83e8959ceaf00c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wavunot/xikonepagimisizekegutowi.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/89156204668.pdfIn PDF document text
    • http://wugerubuvugox.myartsonline.com/68704007245.pdfIn PDF document text
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_ede766f9b191426592a82d328684bb70.pdf?index=trueIn PDF document text
    • https://2e81f42f-67f9-46a9-89e2-a5f3ab3b03ee.filesusr.com/ugd/f138f5_5e49d0a7ecf44230b58d7c8ed0a388b9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/adobe_acrobat_reader_reduce_file_size.pdfIn PDF document text
    • https://8318a6b7-e0bb-4247-bff5-57c3e3b2654c.filesusr.com/ugd/7a11b0_1258f62f0417424284bb90bf5717aac1.pdf?index=trueIn PDF document text
    • http://vizozaforuf.atwebpages.com/saputafokajajo.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/john_deere_1023e_tractor_backhoe_attachment.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_off0000f98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98F 5788 bytes
SHA-256: be3cd2927ba0ea30e7df93d34a2e568c27c9a7b85a7fcc215c69d85fb7820b3c
font_01_sfnt_off00010c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C50 14428 bytes
SHA-256: dd84007af66c06cd5362edb915ae6c61e70c3bebb43b64c19ca28225f94a3c2b

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