Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe07fd7886ca567…

MALICIOUS

PDF

62.7 KB Created: 2021-01-01 21:28:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b2a03f41454bda35b2458c03de1532bd SHA-1: 940df07a1ee17da3166443a0b0fc84cd3b4014d6 SHA-256: fbe07fd7886ca567896c1ed1a6acaa39871ac07a64755b10c3891706eabc94f9
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=lasko+blower+fan PDF link annotation
    • https://cdn.sqhk.co/birenejar/Dicgdig/wd_my_cloud_setup_remote_access.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f8b61fc6f0bc.pdfIn PDF document text
    • https://cdn.sqhk.co/wogigixa/0hgtgdP/87447654559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415739/normal_5fa5fbb2b5c9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459917/normal_5fab8ce0aa204.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453105/normal_5fcd704034e9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372073/normal_5fe1bf6c1f07b.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/ad344fc8-90f8-48d3-9a79-373e8cafbbcd/rudiresenupodojemelabidit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1ba0637-4de6-4787-a72a-4e5a6579756b/mezusavekigajag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8365d101-b959-4f31-ad2b-703eea2abf80/75912668356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b7e5870-c091-4bed-b67b-756641e68821/nuclear_bomb_games_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be994256-69cb-4e0a-b9d8-327666ba957c/facebook_app_download_pc_windows_10.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_off0000ba92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA92 5000 bytes
SHA-256: 3d550f2767c067a3004fa2ad83e87bd5daa9d19d750fc57a0a287bc5e3e5be80
font_01_sfnt_off0000cbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBC 10064 bytes
SHA-256: 6dab3e586373c8d741b648ed2382f85592ac92ecd5fb916ac3b9703993914cc3

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