Malicious PDF — malware analysis report

Static analysis result for SHA-256 8735e1cda833dc33…

MALICIOUS

PDF

166.9 KB Created: 2021-04-29 11:18:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 994b910f153ca050d047af7889c6ed8b SHA-1: d8a7985145fc256ecf9407ce09491c55ee1109fa SHA-256: 8735e1cda833dc333d1f3797d8136424968169dadd2b8bfe0baffeae332e5277
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 URL that directs users to a suspicious domain, likely for credential harvesting or malware delivery. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Le Petit Prince' movie music.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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=le+petit+prince+movie+music
    • http://espaceabonne.com/gamers_wallpaper_for_pcr2ob4.pdf
    • https://cdn-cms.f-static.net/uploads/4403679/normal_60671606dd2b7.pdf
    • https://static.s123-cdn-static.com/uploads/4402948/normal_5fde9e894c753.pdf
    • http://intereriia.com/10022589599z9wex.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fosawef/22379746765.pdf
    • https://23da7c74-6e14-424a-b22a-901aa35eafb1.filesusr.com/ugd/9cc572_92f9d29b9b984314ae9d64cf7aa20855.pdf?index=true
    • https://s3.amazonaws.com/rogugagatuf/96823918246.pdf
    • https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_95a9b602be144f8580038b9d4b1a736c.pdf?index=true
    • https://s3.amazonaws.com/feliso/jajokokebarakaworijunabe.pdf
    • https://uploads.strikinglycdn.com/files/d1ce845f-7030-4c9e-8596-2c02af0521e6/xavubotewinixotunox.pdf
    • https://s3.amazonaws.com/tulosa/aluminium_ingot_manufacturing_project_report.pdf
    • https://fe426b01-1dd0-498a-b08e-7ec37e320b94.filesusr.com/ugd/6b45f0_d951bc21bf0c4510a7c307a0a48352db.pdf?index=true
    • https://s3.amazonaws.com/xoguwavosuje/robin_hood_2010_soundtrack_mp3_download.pdf
    • https://de7eff9d-5c50-4122-bb99-ee112abf7a8f.filesusr.com/ugd/db8f21_908df2399ba4468ca05b28a531329fcb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1337b938-cccb-45a3-a546-47eed33222d8/vasinebawuninogo.pdf
    • https://uploads.strikinglycdn.com/files/22ff7423-c1d5-4fdb-b2b4-7040a7937095/jibutukosominujafe.pdf
    • https://s3.amazonaws.com/genukopapovixo/30899717557.pdf
    • https://a4346b84-4611-49ab-b113-80c9188ca613.filesusr.com/ugd/078c79_a50756b918f34df68ef788a5e21b6e7c.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023852.bin
db873ed750bab2572ac1613afb974a29c6a37df53ec4b19b20c8298bee5b6bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23852 5704 bytes
font_01_sfnt_off00024c2c.bin
f93e05c30f5bdb6adcb2ea45d899a6a2047c261b4fce85de8e6b304c31d0c919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C2C 4840 bytes
font_02_sfnt_off00025c99.bin
52f330b2bd81e571097b6227b183f9e346651f69c899fbe9a21c46d43edf5f35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25C99 16312 bytes

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