Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c93d3e031f16c6…

MALICIOUS

PDF

80.7 KB Created: 2021-02-23 09:42:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f4e9b4d3b059684fe69b06e181c6ba77 SHA-1: 68f990c6f364fb70bc224c3e7ec7b89c13f0b37d SHA-256: 52c93d3e031f16c6a8cf55c467f9ec26ed5622e84156438debb354848fc8ec98
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious website. The document body, though heavily obfuscated, appears to be a lure related to product searches, reinforcing the phishing or malware distribution intent.

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://jottigo.ru/wb?keyword=sole%20e95s%20elliptical%20amazon PDF link annotation
    • http://wigarijagebufuk.iblogger.org/eyelash_extensions_training_houston.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/fkbL0ih/vosuxudipoda.pdfIn PDF document text
    • http://reduslim-italy.site/utti_meeda_koodu_song_download38ig5.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/gluijNW/hit_the_woah_emoji_man.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489733/normal_5fdac06fc28de.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/jijclih/battles_of_the_ancient_world.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388178/normal_602e9de874c9d.pdfIn PDF document text
    • http://reduslim-ordina.site/auditoria_fiscal_livroiu1bn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408713/normal_601c7e78479b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_602b4455a82e0.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/voropa/89635076847.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/nozokezenabafa.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/voluwizunevudi.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/formidable_stromae_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/84074041887.pdfIn PDF document text
    • http://zenomidesedi.rf.gd/16562083708.pdfIn PDF document text
    • http://nitovotiroxe.epizy.com/29201679003.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_off0000fd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3C 5416 bytes
SHA-256: d224c6a19ed2a3e5bfb4cc72fe99fd87fb64f9de7be4cccf4d2b702452dae64b
font_01_sfnt_off00010fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA1 11296 bytes
SHA-256: bef16354153754240061f313d7c39422ae9e904fe033016c07ecf9e9df3aae4a

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