Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad4149064dd4688…

MALICIOUS

PDF

73.1 KB Created: 2021-01-01 07:05:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e5571671bd2802f927370cc7bee4373a SHA-1: ebeff24155e3180de24693b9af20122e5ea3d56c SHA-256: 8ad4149064dd4688e843408f865c5c3cb54499bc4aa4f634f6b238ddc913914c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be a lure related to a TV show, aiming to trick users into visiting the malicious URL.

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://trafffi.ru/strik?utm_term=masterminds+tv+show+full+episodes PDF link annotation
    • https://todurudivi.weebly.com/uploads/1/3/4/3/134344361/rewilujofema.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387035/normal_5fc95f289080c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420748/normal_5f98062e15fad.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/jegciij/lipeluz.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/bXjd5ie/lodedodosaxosoxujenibigej.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/3a884eb3-a345-4d8f-9902-9d50ea7bcdce/copy_a_level_for_copy_monitor.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/enrique_heartbeat_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/figixiwil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be008151-350f-4ee7-ab70-58067064177d/biology_macromolecules_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/506029fe-329e-430d-b48a-7ba3f3d123bc/tenujavapokinemiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f68d5b-ed34-47b1-9e7a-8b4ab4ce0549/58216432776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9b6ece1-9704-469b-9c90-11b6dc3e1999/minecraft_windows_10_edition_hacked_clients.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/calvin_and_hobbes_online_archive.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/wedding_anniversary_cards_psd_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/atlas_de_anatomia_eduard_pernkopf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d56d670-f048-42a6-835b-a569645eb4f8/66086983224.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC5 5436 bytes
SHA-256: 0ef0651d30b805b57c379c683392473910878a153135263d2fd7b8f31ea8f0d2
font_01_sfnt_off0000ef3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3D 11516 bytes
SHA-256: 9771311d6837a8a1a544beb49635409bfb4f433b43bae396d7903a10010b5068

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