Malicious PDF — malware analysis report

Static analysis result for SHA-256 9571c996d1663523…

MALICIOUS

PDF

80.3 KB Created: 2021-04-14 00:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 328f29491cffee05ea0df2c1e2d67b1e SHA-1: 5c0aeedbb6ecfc726c87e524dbce6d02e0b4dcdc SHA-256: 9571c996d166352348331d5ccb6b4d956d9be635e35200be62e9657e3c440c4f
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 0.9991

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://soxebez.ru/strik?utm_term=game+of+thrones+clash+of+kings+summary PDF link annotation
    • http://libutulidux.medianewsonline.com/49752993389.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469358/normal_5feedfbd58a6f.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/63368830235.pdfIn PDF document text
    • http://fejiximodanu.mygamesonline.org/bbc_compacta_class_11_english_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495065/normal_60657b9f31f6e.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/dpr7jjb/bapiruronedo.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/homelite_xl-12_chainsaw_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/kosibowo/iTighic/analytic_geometry_book_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484093/normal_6044d1c2a22fb.pdfIn PDF document text
    • http://rekugegik.scienceontheweb.net/ato_weekly_tax_table_2020_17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_600c9d590f53a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402745/normal_6062075b0c799.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/samubibapof.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/baldi_basics_field_trip_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/28613857102.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/12699017820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f160510-ca15-4f2a-877a-e252e9b5a3c8/pikividox.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/35167406405.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/big_green_coach_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc935fa2-74d3-4ea6-95b9-90d47f8a765d/gedubex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6864114-d557-4abb-b582-b188f482edd0/navy_selres_advancement_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8954b674-2917-481e-9ecf-29e5fc669cfc/kakerafikavevovitetumog.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/fotunuwizazizorepunileg.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/the_crucible_act_3_analysis_worksheet_answers.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_off0000fb6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6C 5492 bytes
SHA-256: 90a4f04757f80a760de749d95de03d5ec0fcce82801ea8caa00e6ff759ce71c3
font_01_sfnt_off00010e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E02 10920 bytes
SHA-256: 2f2608498ff6024d9484cd9bf4e83dd81c7d0cca6ea1acb205802fe22e6a3e9a

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