Malicious PDF — malware analysis report

Static analysis result for SHA-256 352144c423f34067…

MALICIOUS

PDF

81.3 KB Created: 2021-02-18 21:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a71a569af159fe5f4eb15019acb2f967 SHA-1: b0cfa0f6329c4e190b978f74160c4ff71ecdb602 SHA-256: 352144c423f3406767b7453e2c81479558069c489ec84bbdc14645d4301d5edf
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, likely intended to lure the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

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 https://crophysi.ru/123?utm_term=what+is+the+purpose+of+the+digital+economy+act+2017 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479715/normal_5fe0656a62cf3.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/gciiHjh/nosapukazebimifafimet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414672/normal_5fd996c22f7c5.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/ifhiBic/15918818812.pdfIn PDF document text
    • https://cdn.sqhk.co/fasazani/fgcoF3I/vufadanete.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/r5Wjchd/3244822672.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/4idslHc/38370847692.pdfIn PDF document text
    • https://cdn.sqhk.co/wolowivem/ibQjegd/33386338738.pdfIn PDF document text
    • https://cdn.sqhk.co/fovulifavu/hVaijja/illusion_connect_characters_names.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/2eiggig/apprentice_electrician_jobs_eugene_oregon.pdfIn PDF document text
    • https://cdn.sqhk.co/bojidokagivi/mjihhV5/50078178914.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418575/normal_5fe0a637023e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472186/normal_601cdf1b01c0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489993/normal_5ffc8d38387c5.pdfIn PDF document text
    • https://cdn.sqhk.co/liripudeb/jcRjhX2/aadhar_card_fingerprint_scanner_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sifolilo/gcBghhc/apowersoft_screen_recorder_free_download_for_windows_7.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/doxifuba/web_development_tutorial_videos.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/51260652748.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/nuwiwiw.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/xuredoluk.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/tewenedirebusizelexezu.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_off0000fff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF5 6092 bytes
SHA-256: 8bc5d398f3b9ecc56bda0f3fcccacbd2e2f467c0fc9e578644e5525cfb1b09ff
font_01_sfnt_off000114ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114AC 10196 bytes
SHA-256: d75d8eded3b3cefd4a64ca1dd802547678e6d8462c3d51fbee484768275e864e

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