Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a9256f5ef18a8e…

MALICIOUS

PDF

74.9 KB Created: 2021-03-23 11:43:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 28adbd965b5b3cc05a39819883ddda40 SHA-1: 53dd40fa406e02f237fd278bf3ad87120c1f22cf SHA-256: 93a9256f5ef18a8e24ba1067d387278d1913b11f673795b4eb0724b54e6fe7e8
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://gimoguvi.ru/wix?keyword=teradata+create+table+as+select PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368979/normal_603f218b22edc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471238/normal_601d93382ca16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466661/normal_5fff956a49744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379486/normal_5ff471de5953e.pdfIn PDF document text
    • https://cdn.sqhk.co/bofozuto/icXibMU/dune_buggy_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fidegelotag/difighd/30041952235.pdfIn PDF document text
    • https://cdn.sqhk.co/fixosotefe/M6ahgif/23258582597.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/faduxodiwo/46735961257.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/letter_to_the_editor_template.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/5170419616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc696e3-89d3-4a33-8f4b-42d1ca013b42/piwubevenofugipalikovot.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/aneurisma_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/wuziberuka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3141b74c-93bb-415d-b092-ceec8ee68944/41366084185.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/91872945039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7104302-87ec-47b4-9fad-34684f2727df/como_tomar_la_cebada_perlada_para_engordar.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/the_return_of_the_king_book_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/218bd4ab-c898-4aee-bf98-e3ac3e6b3a81/rowunugimobuwugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b29396-35ac-4685-8f93-5692f4c9566b/punctuated_equilibrium_theory_baumgartner_and_jones.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/pokemon_battle_dimension_episodes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35e6348d-7766-4eeb-b750-712a071a5cf8/fl_studio_free_download_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/tinufufafiribupewi.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_off0000e646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 5020 bytes
SHA-256: fae57cb4c51b46c119519744bab3fc2080099a71f78f40272a9f7055d206f5fc
font_01_sfnt_off0000f75b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75B 10948 bytes
SHA-256: 049570c689d7985a0f22a2b8df4635fc4f59604972ea86ad5998fe458dffe3f0