Malicious PDF — malware analysis report

Static analysis result for SHA-256 02950e27648f74b5…

MALICIOUS

PDF

71.0 KB Created: 2020-12-18 08:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5746840421f15bf7eb523d81fc372211 SHA-1: 27c143250cfa7aa9238c1f038d7fcb8a5b09e65f SHA-256: 02950e27648f74b56fdfdc8df496005b290c7941fe6d44c95e3a8c1df4754678
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 embedded URL 'https://ggtraff.ru/strik?utm_term=a+basic+premise+of+the+national+response+framework+is+that+ics+800' is the primary indicator of this malicious activity. ML classification and ClamAV also flagged this PDF as malicious, supporting the phishing/malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=a+basic+premise+of+the+national+response+framework+is+that+ics+800 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380068/normal_5f8c56710e735.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_5f8b2e5e11d87.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/a10ea079-f89a-4a67-b383-ab7092320e71/dark_souls_remastered_enemy_randomiz.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/73433662499.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/sphax_1._13._1.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/ubqari_magazine_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/027c918b-2439-4f63-9796-9da235e7b54d/orison_swett_marden.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/wood_platform_bed_with_headboard_king.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/948a7bcb-9a54-4142-b895-23612545cf3c/gonapawumini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aea901e-350b-43cd-9dc6-7a683faaafa3/sokiwaw.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/60630616599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f18e02c-18dc-4fea-a3cd-207a7f5b0a5e/gigabyte_ga-990fxa-ud3_linux_drivers.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/kopavixiroxilabobadatib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98f430fb-8888-465f-8930-01f069ca7f2c/pipawuvujobutukojas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5044d230-80f4-4890-a4cf-4012c49bbdf3/embossing_powder_techniques.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_off0000d758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD758 5876 bytes
SHA-256: ce5ff0f828b24ab7783f01dc28a9567e90b932d460449a0218d894f001b12428
font_01_sfnt_off0000eb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3D 10516 bytes
SHA-256: 0379c0db0c7bba946a7e39713cb8405884d9863e31fae3ac694c442b11fa62fe

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