Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee6e297426eca3d…

MALICIOUS

PDF

75.3 KB Created: 2020-12-16 06:16:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 53e9e1b985eb70b4eb7c91f6692a53e4 SHA-1: db221b6563de3901494b53a4dd9b1134b84a4753 SHA-256: 6ee6e297426eca3d9b51f60517207f63b837ad32b22a46757315f45b6c02d8f5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to a suspicious domain, likely intended to lure users into downloading malicious content or visiting a phishing page. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=i+doser+apk+premium+chomikuj In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421205/normal_5f9839926b452.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379471/normal_5f9afb71ea95a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379854/normal_5f8e0669ed62c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5faa128324564.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/376e6519-a4f1-49e1-a457-42c70cf0b7c6/arctic_air_ultra_review_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/509ed858-3c7c-418c-ac34-c23c11ad0b11/49496949988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e78bc03-241d-4868-a5e1-fbda2e455f3e/panasonic_answering_machine_voicemail.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/rajikunozinesur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da34934e-62ac-41c5-a57a-4df4c79705e3/alminyum_dkm_hatalar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/419bda11-9da0-4caa-bcfb-2b73a8b34f66/negacion_del_mundo_indigena.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc77b74849d1727bc12ab1a/t/5fd67e3e0f11661d4c30261a/1607892542280/2019-_20_calendar_template_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0f788c9-e2e7-4e26-9e46-1d80405dda05/ecstasy_of_st_teresa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4c9dead-1e3a-4535-ab76-6ae9a9eee8cb/24379692480.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf5492edfcd2bda90c3f5/1606219090483/tiwazovinatugitexobowivor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d2ac571-6cb7-451e-a161-2eb38e4865c4/simple_machines_and_mechanical_advantage_ch_4_1_answers.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_off0000e778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE778 5360 bytes
SHA-256: 188685be5de1aaf0634f1fca3a52449f00cc91ff010f57c0d2dda134ec130a0e
font_01_sfnt_off0000f98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98C 11032 bytes
SHA-256: 053dca8d2f0490b47eea0a1523fd54615b6aa6ee1cb1cbf055be8a62ed8d9181