Malicious PDF — malware analysis report

Static analysis result for SHA-256 305a74ce5d8eb9ba…

MALICIOUS

PDF

70.7 KB Created: 2021-01-12 01:03:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 27abff062915e1db91e909c754b400f7 SHA-1: c5bcba90b8f14071b0c376444c4afa590a3843e7 SHA-256: 305a74ce5d8eb9ba8b1e84c1207ae1821fc5dcfa45b7a02554f31bc5309dcef0
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 pointing to 'traffset.ru', which is likely part of the malicious infrastructure. Although no scripts were explicitly extracted, the nature of PDF malware often involves exploiting vulnerabilities or embedding malicious JavaScript to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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/aws?utm_term=new+movies+tamilrockers++hd PDF link annotation
    • https://cdn.sqhk.co/monasomeb/UoiaFZa/67247044023.pdfIn PDF document text
    • https://site-1178547.mozfiles.com/files/1178547/mazonivexusidexomorene.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/DgfoVNe/konirej.pdfIn PDF document text
    • https://site-1173706.mozfiles.com/files/1173706/bedesituxujusatedok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383579/normal_5f97e586de069.pdfIn PDF document text
    • https://cdn.sqhk.co/wopidaxiwuk/Shejfgg/87579641458.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/jajoxulabojaso/basic_html5_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/wifi_password_cracker_apk_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/download_high_school_musical_3_subtitles.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_off0000d93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93A 5364 bytes
SHA-256: 60e35edababb3f060f100585516978f636fa8574d1b1451ace6cc100f70dc464
font_01_sfnt_off0000eb64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB64 10304 bytes
SHA-256: af6bb2a6f199de13fa21525f6656680b76eae4b9aaa4c995dda39f0d3bf81b1f

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