Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac75fa2eddad2671…

MALICIOUS

PDF

65.8 KB Created: 2021-05-03 15:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a36c1039ce4430f66ca41e5cec03755 SHA-1: d22437e556ff33960a829e577725d6a56ae45b18 SHA-256: ac75fa2eddad26714272500e8defdb1393ab491e3e9130c8c17c6ad686c714d5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, indicating a high probability of malicious intent. The embedded URLs suggest a phishing or malware distribution scheme, where users are tricked into downloading further malicious content disguised as legitimate files. The document body, though heavily obfuscated, contains references to movie titles and download prompts, reinforcing the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f804948f2---dokon.pdf
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608186ca6326a---13852535051.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca40d12346---mabizezadufusovi.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/81b1c8a791719cff65670bd2c067a194/23179900572.pdf
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160875a6a67044---xoxatijofuzomadomur.pdf
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/554765657fcc3afa1ce9076f9169af90/46358108651.pdf
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16076269563aa3---genapavikunisivoneden.pdf
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/301146d14231b72ed08e7342bb60c02f/kopugab.pdf
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/9ed372607d5da2a002d62a562391b388/2911551016.pdf
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1896ee5de---dakepupevu.pdf
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/hh0lph0uth9fm1eomh5ut47sl3/3415602376.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/f6dbb57a73db8d0e044170a3a22ee2c9/keletovozosa.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160742870587e3---8611266890.pdf
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160784ffc6ad41---zefokasipexafipewakati.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=annamalai+tamil+movie+full+hd+free
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5f0.bin
f3f1c98d5df02a0587da994230f2cf7b879b86bc15200a5dd200224dbc5cdd6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F0 5020 bytes
font_01_sfnt_off0000d6df.bin
ca7b57e498590ada0de944c4911ae0b87a821764d80761aa3845e4fca506624e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DF 10260 bytes

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