Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a6844b30dd4aa6…

MALICIOUS

PDF

84.4 KB Created: 2021-03-13 16:28:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a48833e2510fad1d11aa44f348736112 SHA-1: 5485b8364f5a2f7ddcf04918d2533276816022d0 SHA-256: 70a6844b30dd4aa689e20b92fda39603d9ee9bb48b72f4390de611db8e4e68e0
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-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://pelibifir.ru/aws?utm_term=bodas+de+sangre+personajes+la+criada PDF link annotation
    • http://bonifacy.site/how_to_improve_arm_strength_without_weightsysw21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378386/normal_6021ce80e30e4.pdfIn PDF document text
    • https://cdn.sqhk.co/kipezipilojo/jeYlidV/guess_the_retro_game_arcade_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/VggjfCi/spirited_runner_tumblr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485014/normal_6037ca3ae7401.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477409/normal_5feb7afe857f0.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/ihqtyhh/mini_block_craft_3d_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_602fdd3c86db1.pdfIn PDF document text
    • http://rkconstructionsucks.com/firestone_assessment_of_self-destructive_thoughtsxfjn0.pdfIn PDF document text
    • https://cdn.sqhk.co/mifijizudi/gjdjgjg/minority_report_movie_vs_short_story.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/63400a42-ec54-4653-93a7-6c475430383b/vuvora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a7f5a25-0621-48b3-83ec-a51f5050425c/lanumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/886724e7-7d65-4f41-b4c9-9308c52d18a7/how_long_does_it_take_to_assemble_a_portable_basketball_hoop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a79a309-be9a-455a-b4d8-260fdd121110/liwad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bba2f810-28e6-43f2-829f-de0456155035/9901957965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ede2af-89e3-404e-8099-0cc33223079d/can_you_get_hearing_aids_at_costco_without_a_membership.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_off00010efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFE 5364 bytes
SHA-256: 301e0a6742a4fe4f27c78b001f2f30f213d96267e49e96193986c50e01cd0829
font_01_sfnt_off00012152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12152 10420 bytes
SHA-256: 13e10d2cff2189648177577ee6d27e3e26944b5bc1ee7a105cc02226675f4a93

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