Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36aefa130af8f14…

MALICIOUS

PDF

68.4 KB Created: 2020-11-24 03:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d481c9d8461dbc4df941fd466a600f2f SHA-1: 21ccc610c7953d5909fdbe04845330fe09da2d55 SHA-256: e36aefa130af8f144656a79f207a2298bebd0f56f600c7b6db1fb3c9f478414e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary URL identified, https://ggtraff.ru/strik?utm_term=beach+house+terraria, is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

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
  • 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://ggtraff.ru/strik?utm_term=beach+house+terraria In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f8925c93c90a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369773/normal_5fa84a3f6af78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5fa0e150bbfc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5fa4b3afd79fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501041/normal_5fb7a5e53fe73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413235/normal_5fa006e3321fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444092/normal_5f9de7d166039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5fa5d31422e3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421969/normal_5f9b6f7a78ac2.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/52d0694f-10fa-42fc-9975-9de501032275/eso_lauriels_lament.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/31749075142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/def6830b-744a-4474-9664-fe41a9d5dcd3/gigavonesivufumisebut.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_off0000d197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD197 4904 bytes
SHA-256: f6f48c2bab7ef3642db93f48b632637bb30471c98041396f1f511512930eb40a
font_01_sfnt_off0000e23a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23A 10292 bytes
SHA-256: 657f9887fdfe4a03572890c21c9cc59e631eb4873377bb2fa4188bd653898814

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