Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd919cb6f0eefaf…

MALICIOUS

PDF

67.2 KB Created: 2020-11-22 13:44:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 984eedd946ad301f6676f06cf023aa7f SHA-1: 9d62fe74f1e47765cd4461a5d5aa3019c6c6a84a SHA-256: fdd919cb6f0eefaff2a23ce9bc3bf4a053ac373f62c3e157551c8b97bdcc337c
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 0.9998

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://trafffe.ru/123?utm_term=how+do+earthquakes+impact+the+earth PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450152/normal_5fa36f2c379eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404987/normal_5f97c3eae9899.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495681/normal_5fb429a92034a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5faa19df3e503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5fb93b415ce37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410988/normal_5fa60761e54d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374708/normal_5f89603f1ec40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5faef8b6f1cf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_5f9f04d29dfc9.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/f0aa5bf1-48c9-4e78-b489-3d08dba62edd/note_8_dex_station.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7955b87d-38de-4503-ab43-d744220a4839/fodakot.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/salisekoxufibamagise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af647878-9391-4251-b243-d4e176e33626/terraria_crack_1.3.5.3.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/ketebilusufaronadumoj.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/intercure_200_data_sheet.pdfIn PDF document text
    • https://medlineplus.gov/earthquakes.htmlIn 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_off0000caa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA4 5524 bytes
SHA-256: abf1853355e1d4aa680f8cdffdebf42c55fa7dd7bf509358ba7dce815f7ad8dd
font_01_sfnt_off0000dd4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4C 10276 bytes
SHA-256: 56997b8b74507cf2e27190f5a80f25623c1df3457c58ef0e1812dcb5f2c73ee4

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