Malicious PDF — malware analysis report

Static analysis result for SHA-256 2491ffeb496f3bf2…

MALICIOUS

PDF

64.3 KB Created: 2020-12-16 10:55:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f7d0df485262527150fd21aefad9a2a8 SHA-1: d544d1c4777e539623f76b16cd431559467b06fe SHA-256: 2491ffeb496f3bf2b7434d6541d1e715926803807d9ed085c2507803bc58eea9
96 Risk Score

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 0.9996

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://traffine.ru/123?utm_term=broken+heart+wallpaper+hd+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418584/normal_5fa124390af9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464724/normal_5fd1dede754d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc576fd8139af037663e8f6/t/5fc68bcb173fb5383b88166b/1606847436279/falling_balloons_from_ceiling.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10f7f085bf90c0efdfe77/t/5fc59e979ee0f32b8715277a/1606786713632/slipknot_darien_lake_ny.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5184e1c8c7413144d0b9f/t/5fcab0dd5113a7255f7727a0/1607119070701/lunar_battlegrounds_location.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87ade96d-cd49-4206-a98b-f5284087d76e/lr44_battery_walmart.ca.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc06cfc27a199023ab2e458/t/5fc0d7923f75b16643f3b281/1606473618298/america_2050_rockefeller.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce5c850ee49e251fe8687b/t/5fd1728d99fe644e8a550491/1607561873186/gemosegogupuzunojipegugon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9907f2ef-42c0-42b6-8a2d-750e0b89ba04/96978721842.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1380dc6d9645836244656/t/5fc3832cf8cdb769c6506e34/1606648620563/college_scavenger_hunt_worksheet.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_off0000befa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFA 5076 bytes
SHA-256: 9d19ea3eb438b28e7b543556123ea47edc200d127cfa9738efd17ace0d85cf27
font_01_sfnt_off0000d04b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD04B 10668 bytes
SHA-256: 2b837175cadd6e5234823cfd64800545934697f3a769989cf3f8ddd379e66f05