Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58aed962b5c4283…

MALICIOUS

PDF

68.6 KB Created: 2020-12-18 08:20:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e16c55cc1c7c55e4972cc41b81ab5056 SHA-1: b435bae5b0147e25f230d27601219111afc3bc0b SHA-256: e58aed962b5c4283e255897ca4b12567c6546c8897085f81a54eefa2a0c2e903
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link disguised as a lure for "Boom Beach" unlimited gems, which is a common phishing tactic. This link, https://cctraff.ru/123?utm_term=boom+beach+unlimited+gems+and+coins, points to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving exploitation for client execution.

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=boom+beach+unlimited+gems+and+coins In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383791/normal_5f9c8d7e3f16e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452382/normal_5fa481627af3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459324/normal_5fa3d949167c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5fa1712962c2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379485/normal_5faa75713fd38.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/556ed5f0-7e87-46bf-bc17-2e9f6e6d2c2b/palm_desert_high_website.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f24c403f5353fd95fd42/t/5fc1f3f0a97599144e3cebfb/1606546420159/6232391387.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0055e5687f52b6b7c450a/t/5fc4f21ff8cdb769c67e5618/1606742561998/gunboundm_guide_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44838a93-b5a8-411c-a64f-213640c9f74a/jedosava.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2cb63bf71053ccb1c5e2b/t/5fcba440da45e86ccaa7d320/1607181377233/minecraft_pocket_edition_servers_skyblock.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e552ec917750a3d7e003/t/5fc174cd9b1ed03538131718/1606513870690/70749818174.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1c049c6d9645836281f45/t/5fccb8382fa8bc6bcde5d6e2/1607252028017/32515285935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1fe7140-f6dc-4f81-8e45-39102a4021eb/bonopuzenobirufevu.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_off0000cf16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF16 5444 bytes
SHA-256: 1dab6202394a24bf334975f92f73d48e059b049625f1be3560ac4fa1a8b2f06d
font_01_sfnt_off0000e174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE174 10452 bytes
SHA-256: 9715f04bc284bb6238de116fda3ac74dbf5d1faa7fa385e950dc65e86ed2771c

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