Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be4248e12504686…

MALICIOUS

PDF

89.3 KB Created: 2021-02-04 06:53:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 390aa20dfcfd591922dd15aed8f7cfc5 SHA-1: 3e033215dc3ddc45cbcdd6e3b51c9392f8835428 SHA-256: 7be4248e125046866fe9223b710bd318c16b517c9ea72bb5e981990fabab072c
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains a lure for an "Hssc patwari admit card" and an embedded URL pointing to a suspicious domain. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/aws?utm_term=hssc+patwari+admit+card PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383678/normal_5fe50c9614671.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5ffd255c420f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417216/normal_600bacd21633e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423462/normal_5fda8d7fa0326.pdfIn PDF document text
    • http://pijakonojimuw.iblogger.org/26661086575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393028/normal_5fd9a0c1505b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495271/normal_60039be51df77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415935/normal_6003e77a2cacb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/bulozor/15600009927.pdfIn PDF document text
    • http://xaxelajifamukas.rf.gd/tikusarenosojorojeka.pdfIn PDF document text
    • http://sofiwige.rf.gd/tamil_biography_books.pdfIn PDF document text
    • http://dinukafewu.epizy.com/hindustan_construction_company_ltd_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/falik.pdfIn PDF document text
    • http://zepogofeto.epizy.com/93352924394.pdfIn PDF document text
    • http://bopuxenuxesozu.rf.gd/commandos_2_3.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/a-_ha_scoundrel_days_1986.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE02 5240 bytes
SHA-256: 13c83a981cfb1b20ac1fa828d79cb9a12009327acaa5d89b0f0f6edb30a266ea
font_01_sfnt_off0000ffc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC9 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off00010b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2C 11304 bytes
SHA-256: 7fbeddfc6de3e3ec27e4fb3615af74aa4dedd224f75ced6542af80c095b4db39
font_03_sfnt_off000131e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131E2 12432 bytes
SHA-256: a859e8563b93cabceaee344eead09ec8bb023fe298036c0470ea033ed2967760

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