Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad0ecf2fc461456…

MALICIOUS

PDF

70.3 KB Created: 2021-02-15 13:15:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 378c60c9496586862239bed399bed85f SHA-1: 34027e6b6a55d6bdb9d04efbf3ee0683f4c927b1 SHA-256: 5ad0ecf2fc461456628b180fb8db088c6125ea9e529b682a82372de910fc8a23
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics as a potential phishing or malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or malware delivery.

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://seumenha.ru/123?utm_term=nikon+prostaff+rimfire+rifle+scope+3-9x40+bdc+150+reticle PDF link annotation
    • http://ruwegekugite.22web.org/35360265130.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/zoluwivebiro/census_2011_data_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/tapaponiwiditifovokoforaf.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/23017081639.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/88202752056.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/anne_of_green_gables_oxford_bookworms.pdfIn PDF document text
    • http://ruberosorodoge.epizy.com/35238411831.pdfIn PDF document text
    • http://rulumagevamed.epizy.com/ariston_freezer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/fetoju.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/27200064845.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/59249670275.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/80557807663.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/avast_antivirus_free_2017_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/gilding_metal_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/cisco_switch_visio_stencils.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/lantus_solostar_injection_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/xazika.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/36413421756.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_off0000d170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD170 6300 bytes
SHA-256: d33532f8adf584fc10725a65a6ab9cec8a70668b444f206e3723d40703c2ccf4
font_01_sfnt_off0000e6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D7 10928 bytes
SHA-256: fdb3bfba28ca1522375600f8ab6252738ec0fd340eea5092375cd9c77de79ba0

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