Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff7564ab024e231…

MALICIOUS

PDF

69.5 KB Created: 2020-11-14 17:11:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4f48e4a26ef2b197d5ad8a9faf658350 SHA-1: d7f54a0b979e24eb1b0f9c1f155167dd20df682a SHA-256: 8ff7564ab024e23193509804d1e779a535bfcfbcd4b0d29ead12031db725f4ef
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/strik?utm_term=oil+change+morgantown+wv PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403130/normal_5f9e79bd7fb70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456984/normal_5fa35a9602b28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393181/normal_5f9c995dac7ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372074/normal_5f9b85354b844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_5f9a52b4a71e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477139/normal_5fa783d9473f4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tiduro/rizegibikimoz.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/49282880013.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/c._a._t_full_form_psychology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d69679d-da19-4f55-afd9-b206a07d7e25/wedubabekiwexujibunaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/jixis.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/7352297985.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC412 5000 bytes
SHA-256: 800b8657a4136436c031c843c0edd80e1f65274ef135be9aaeb7be9885a30d8f
font_01_sfnt_off0000d4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E8 11304 bytes
SHA-256: 2d688b0ce372babb595dab0721e618166dc28331c4fd207786feafac96b169a5
font_02_sfnt_off0000fb66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB66 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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