Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce688e218a0eadec…

MALICIOUS

PDF

69.6 KB Created: 2020-11-19 23:54:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b87182761ad6e8c893e99332bc6c29a9 SHA-1: 924214495869586002a8fa4735416ec33dbcb45f SHA-256: ce688e218a0eadeca56c2c81ce9e603270700f8465b6efc26bdcd4a2a32e5cf5
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-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://trafficel.ru/aws?utm_term=du+b.+ed+registration+form+2019 PDF link annotation
    • https://dikosunasalimob.weebly.com/uploads/1/3/4/3/134363034/perubolagobupaxewij.pdfIn PDF document text
    • https://risimapi.weebly.com/uploads/1/3/4/3/134321435/cfb34d3fa.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/ratefunerod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388272/normal_5f8e9d93ae5eb.pdfIn PDF document text
    • https://pusurezifokuni.weebly.com/uploads/1/3/4/3/134317864/f671baad891017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371514/normal_5f8a0cac23a59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_5f9d299cba044.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0544e752-1cd2-4bfe-a77b-5ec02a1a89af/54546158885.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/insomnia_1997_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/descargar_libro_aura_gris.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/ranobojaguwurapoloda.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_off0000d115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD115 5848 bytes
SHA-256: 8e9739cc9e6a8cedb170db6b905b74ccc09d0a72064f8ba745cfc20bdd1869dd
font_01_sfnt_off0000e4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EE 10748 bytes
SHA-256: 72eeb594b1a8ff920171c72dbe8b88ac719b59d158bb9d4086476b9ac6288437

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