Malicious PDF — malware analysis report

Static analysis result for SHA-256 2829e8950c626bcd…

MALICIOUS

PDF

80.6 KB Created: 2021-05-12 10:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c8944e11f688e9eba7d76a89e1b1fb3d SHA-1: 119f3ef5298e3e80cc6ee32db41c5385190fe8b3 SHA-256: 2829e8950c626bcd5f2ff81159e9a955ebce8d2048fa5447e5269b63a88a200b
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/strik?utm_term=pre+reading+strategies+for+high+school PDF link annotation
    • http://pestore.pro/20942149183pqaud.pdfIn PDF document text
    • http://good-production11.site/40922264498out4y.pdfIn PDF document text
    • http://bbcua.site/30807999474yyyz9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_604ae960eeb11.pdfIn PDF document text
    • http://amandeepsadyora.com/tiwapulupegaxisudaredikipohygz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376125/normal_606509a3334fa.pdfIn PDF document text
    • http://edevletorg.com/9190953024767ec3.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/fakuguvil/how_long_cuisinart_ice_cream_maker.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/everybody_writes_ann_handley_epub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6ad8f15-b1fd-4e56-a462-a5f444829ae2/fifty_shades_of_gray_soundtrack.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/tabinakivoxowureguxilu.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/alabaster_box_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/75972353361.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/85403085607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a2592df-d65e-4b69-bf1d-0a0f1f2e1301/what_is_the_purpose_of_instructional_strategies.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/job_order_cost_sheet_template_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d73a2d9-9655-4b2b-9950-257be1ed7ac3/nusolalofewitenenidov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4224f94c-2970-45f3-9d22-2d3806c281bf/aquasource_faucet_aerator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c7e13f7-48e4-49c1-91c6-20add8a19634/vijeranakibapo.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/vifikazasudefo.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_off0000fbf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF6 5284 bytes
SHA-256: e3bd0e5c105ef893e87edd01cc3dbfaeff75afd6db9ba42aa323057813e070e4
font_01_sfnt_off00010def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DEF 11280 bytes
SHA-256: 666d6f56d73dcb17485173c8f9d292f09c47f22cc8a6cf7232b38304175dd404

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