Malicious PDF — malware analysis report

Static analysis result for SHA-256 90b6370ecc3d5cc8…

MALICIOUS

PDF

101.0 KB Created: 2021-02-23 06:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3b40aad2a7e8e3bdedf73c8286e8624d SHA-1: 986c46efa2abd93b5285ad5dea9534642488e280 SHA-256: 90b6370ecc3d5cc8c2b72cd02d8fe3dbb4b35c7daf5fdace84017ec5eb3d63ae
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 0.9997

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://bologen.ru/strik?utm_term=philosophy+of+science+introduction+books PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444092/normal_5ffe47074d7e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496170/normal_5ff69b8d25b96.pdfIn PDF document text
    • http://chambrehq.xyz/jesapowhb1pk.pdfIn PDF document text
    • http://sun-italy.space/why_is_my_h20_steam_mop_not_steamingl5dmm.pdfIn PDF document text
    • http://xavolavuduxi.22web.org/63698182472.pdfIn PDF document text
    • http://yogist.fun/wojudiwokojifujeresupow9jt8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405639/normal_5ff77426d6d58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505096/normal_5fe3493962d54.pdfIn PDF document text
    • http://ukranews.site/schwinn_250_recumbent_bike_problemsx9glx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jejulurowev/platform_ankle_strap_black_sandals.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/facebook_cover_photoshop_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/catholic_faith_formation_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/media_creation_tool_windows_8_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/animal_crossing_nds_rom_deutsch.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14264 5224 bytes
SHA-256: 933432b025432d49dcfecf5114ae43806a825fa3c44d7f0388a0a75d566ddd04
font_01_sfnt_off00015413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15413 10956 bytes
SHA-256: 0f2d6226ab38fb44ba27878718229066ce397baf0a71c91f4ebe6a70ac1fbfd7
font_02_sfnt_off00017862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17862 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378