Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e4cc9815a6d0c5f…

MALICIOUS

PDF

68.3 KB Created: 2021-03-03 19:07:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0dce00c4e97b208d899ec597c9ade29b SHA-1: 804f37fd333c24fcdd1943a3a58120e2c180035d SHA-256: 0e4cc9815a6d0c5f4298853e0c68c60570475bed5c47a7321d97e04a13a01b3d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be related to search results, reinforcing the phishing lure.

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/strik?utm_term=sennheiser+xs+wireless+microphone+system PDF link annotation
    • http://wiinorama.space/donald_barthelme_snow_whiteucekw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444864/normal_603e90d23ea2d.pdfIn PDF document text
    • http://graatorama.fun/genel_iletme_kitabba7y4.pdfIn PDF document text
    • http://draiwenstore.online/what_desserts_go_well_with_red_winezh7y3.pdfIn PDF document text
    • http://itawomen.fun/crash_bandicoot_3_ps2_isoogwv0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375528/normal_5fc6ba3ed38f2.pdfIn PDF document text
    • http://pressit.fun/what_does_lily_of_the_valley_signify7wmv8.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/xupimaral/bibi_fatima_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/zxing_barcode_scanner_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/mammography_reporting_system_version_7.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/amrita_nayak_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/top_free_joomla_templates_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/sajanapitusisafanew.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/24040912247.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/smoke_fire_brush_photoshop_free.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/najirowusawisijugumu.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/cucamonga_california_weather_report.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_off0000cec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC9 5328 bytes
SHA-256: 7ea2b7262013ebb79968121228f0f5e3c626a30ae1edef0119c316cad4a2ef2e
font_01_sfnt_off0000e0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E3 10512 bytes
SHA-256: 75387abc4d7259b3295b93375f37277b048618f88008308836f8b5599234dfaf

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