Malicious PDF — malware analysis report

Static analysis result for SHA-256 10113954ad656a47…

MALICIOUS

PDF

65.9 KB Created: 2020-11-25 16:11:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b60faee9346b42276130f890e429bc0f SHA-1: 6bdc0e6dea202215c99c4c9cd349f8710c5758dc SHA-256: 10113954ad656a47ee255936cc9220c7c2c8e97d23521d13e16366ef663ed51e
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'https://traffset.ru/strik?utm_term=laredo+airport+zip+code', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text related to 'Laredo airport zip code', suggesting a lure to entice users to click the malicious link.

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://traffset.ru/strik?utm_term=laredo+airport+zip+code
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5fa866e1afec1.pdf
    • https://cdn-cms.f-static.net/uploads/4380681/normal_5f93ce327fb9f.pdf
    • https://cdn-cms.f-static.net/uploads/4370072/normal_5f97e639cf05e.pdf
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/8768087.pdf
    • https://nabatiniwoz.weebly.com/uploads/1/3/4/8/134889778/fowupewerejasez-zawolov-setapolalop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tigovatolis/truth_politics_and_power.pdf
    • https://s3.amazonaws.com/jevelel/tokixipuwi.pdf
    • https://s3.amazonaws.com/xanofamaja/kufuf.pdf
    • https://s3.amazonaws.com/zowejunef/manual_de_cafetera_casadio.pdf
    • https://s3.amazonaws.com/zuwimadaneb/stoner_john_williams.pdf
    • https://s3.amazonaws.com/vexeliku/cola_de_caballo_planta_comprar.pdf
    • 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_off0000c6a9.bin
9de0d4b7c78c6b7451e7044bff8a1eeb9d9f36e8af9b76e203f1c3a936476c08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A9 4848 bytes
font_01_sfnt_off0000d742.bin
c013337f530ba11e3ac645771a4cad57ed453767549f7f9b10d14397adf3b605		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD742 10444 bytes

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