Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fdc13f0a7e2172d…

MALICIOUS

PDF

75.8 KB Created: 2020-11-19 04:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4afe2c8e88e645a8c1e568103fa84516 SHA-1: 1275a54041c6a9cf9eb55d0e72f5b449ce1d4891 SHA-256: 7fdc13f0a7e2172d15dd3239a2c2cf04eb1c921d009cd9178054c2be34628fb0
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://traffnew.ru/123?utm_term=nauticus+smart+tabs PDF link annotation
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/gokonuzabewareboteme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_5f9752199bd27.pdfIn PDF document text
    • https://pilewamef.weebly.com/uploads/1/3/4/8/134849526/08841562238.pdfIn PDF document text
    • https://gejewesogoj.weebly.com/uploads/1/3/4/6/134612034/tibifuzularawej.pdfIn PDF document text
    • https://jawemojope.weebly.com/uploads/1/3/4/3/134399256/mikedaxunu.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/punurum/72095406215.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/petiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb57d748-ebf8-4063-920d-d94052cc61f2/tenejowavigujeditatitoz.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/robert_lanza_biocentrismo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da594b89-7f4e-4049-8219-68da65872e3e/engineering_with_excel_4th_edition_s.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/class_c_amplifier_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ed3494-b915-4a91-90f1-e3c80a27b390/88379543586.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/kimi_finster_live.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4d4b647-def8-492a-a2b2-3042d3a1d745/tagebumafex.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD661 5024 bytes
SHA-256: 60451ea8ab320fa7fd804c554c14e0d29a8052cbbe390ef36b2f8fa6365d2a9f
font_01_sfnt_off0000e75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75E 11080 bytes
SHA-256: e9fc95e8114842ffb62f0ee7a4a2d6369556e271e7cc80c60909a9aa5099245a
font_02_sfnt_off00010d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1E 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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