Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba8cc635c5262c5…

MALICIOUS

PDF

75.5 KB Created: 2021-05-31 10:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 18397026c37f1cd2b7c03418eefcf33e SHA-1: 73ffbb6f4f1b6b5ee1d7ef231ada6cecbe944434 SHA-256: 8ba8cc635c5262c59b5d4fb37f5e9a699e82944c4a0b3f0000bd1afb6bc4c961
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://soxebez.ru/123?utm_term=searching+for+sugar+man+english+subtitles PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374374/normal_600e6d21e7c16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462982/normal_603eab2b9be43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412570/normal_600f11a9200dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391915/normal_5feba833ca51e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415769/normal_60243688d585c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407084/normal_600100a60284a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366351/normal_5fcbd9dde2e27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_5fd3817dca374.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418185/normal_6002547acc845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498404/normal_603e6131d17eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406202/normal_5fec532ff001f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387586/normal_5feb398b996b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490133/normal_603530fc3d38c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420586/normal_60175b29aefa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_60269ba195fdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484618/normal_603ab618621c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377663/normal_5fdffae23c8ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389387/normal_5ff6d3b64c785.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/c15dc75d-e738-47fa-9428-0169a1dab27d/johnny_upgrade_boss_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bafdc0a8-e2a3-4cb8-bd89-f682acec5657/51162279363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ca28b78-4f84-40a5-96ff-4c8d4fed0b5b/look_back_meme_funny.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE575 5540 bytes
SHA-256: d26970102707fabcb83817f578f8e02e54933f2a07ed9350a0fc29bdd3515299
font_01_sfnt_off0000f825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF825 12200 bytes
SHA-256: 5e999f1d8fce8c95c48f3431506807778187bdc4c7060f9a7daa7d544db48b39

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