Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2eaebca6cf6180c…

MALICIOUS

PDF

147.8 KB Created: 2020-11-26 22:53:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d648d74541a56ad45014c06dba745756 SHA-1: 75560f7ae51f6e9b3b722d7048f24f256c9a1708 SHA-256: b2eaebca6cf6180ca4dfd6c65e3668bca80e35de3884040099d83ec69aea8939
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ggtraff.ru/strik?utm_term=wrongful+convictions+scotland'. ML classification and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=wrongful+convictions+scotland
    • https://cdn-cms.f-static.net/uploads/4383802/normal_5f8fab7213f6c.pdf
    • https://cdn-cms.f-static.net/uploads/4369654/normal_5fb2c7ef30d5d.pdf
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/6520184.pdf
    • https://cdn-cms.f-static.net/uploads/4370092/normal_5f911eb4b7b51.pdf
    • https://cdn-cms.f-static.net/uploads/4383149/normal_5f9d16de8204d.pdf
    • https://cdn-cms.f-static.net/uploads/4427523/normal_5fbc91f4d608f.pdf
    • https://cdn-cms.f-static.net/uploads/4471686/normal_5fa4e57b8d478.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/bulikowexunepov/52029096195.pdf
    • https://uploads.strikinglycdn.com/files/635db78c-c4c1-4406-841f-a847a1957e07/fadanepaganexexezaban.pdf
    • https://uploads.strikinglycdn.com/files/fd6055d1-fc75-4473-85a9-bf7c87bdc54b/dap_test_scoring_guide.pdf
    • https://uploads.strikinglycdn.com/files/b084f7a9-7a97-487e-aaa1-12e7b729f334/96452030666.pdf
    • https://s3.amazonaws.com/dadupawo/activision_games_android.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e25e.bin
3751194c36efc307775aaa6a2f2112cb5a30260bbc95ecfd4d1a4b7448862409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E25E 5704 bytes
font_01_sfnt_off0001f607.bin
7108aa88348b97aa83073b2033036c0b8016f9520985c2e0d2376c4b7113d872		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F607 5024 bytes
font_02_sfnt_off00020738.bin
c84f36ac9e6b857d7c3a9ff55ba1259afdaec9d4624a4b073841f95c3386429b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20738 14352 bytes
font_03_sfnt_off00023368.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23368 4324 bytes

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