Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da18152a7e3215d…

MALICIOUS

PDF

71.9 KB Created: 2020-11-10 05:14:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0a84ac657619303fcdb2097b75f02f9c SHA-1: 21493a73b55b441e134f57b67972e049f9a01d93 SHA-256: 5da18152a7e3215d490b3828082518fb75b5b78caa14e77ab0a291e3f2c1c7e4
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://traffset.ru/123?keyword=bobcat+news+boca+high PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5fa24d62afec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5fa05889b06bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428054/normal_5f9d6e3b86f65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382972/normal_5f8ce3dc05d95.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/pisik/jinunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4340bd6e-6388-48a4-bcbf-240d125acc58/wovorupe.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/manorama_weekly_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/les_neurones_cours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8a49e63-d5f1-4c91-9e63-385eae241611/97700878025.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/10412568323.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/download_naruto_ninja_blazing_mod_apk_2.8.1.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_off0000dc4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4B 5212 bytes
SHA-256: 04bbf2426c8d5c480e7041e90e8539b1155fcd12132b0606af46bf335cb40746
font_01_sfnt_off0000ee23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE23 10768 bytes
SHA-256: ec2675e4444e7451f8d51733233a1d25e8277e2591df7fe89a876c984ec86e58

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