Malicious PDF — malware analysis report

Static analysis result for SHA-256 932aee3079ba8f45…

MALICIOUS

PDF

64.1 KB Created: 2020-12-23 23:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: df371c88b2e2d1190b678b6a7e84cb03 SHA-1: ef8e1d5f6d8d4d9106b4c27853cbf9e2fbb65ee4 SHA-256: 932aee3079ba8f4549596218b0e46b3f76112ee926a74303d1fe504b292200cb
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one prominent URL identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a game mod, aligning with common phishing tactics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware.

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://traffking.ru/strik?utm_term=defender+2+tower+defence+mod+apk In PDF document text
    • https://davavenetu.weebly.com/uploads/1/3/4/5/134500413/xugaxofotumipa.pdfIn PDF document text
    • https://pasukanat.weebly.com/uploads/1/3/4/4/134474220/kulije-merisifujitub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411498/normal_5fc5da63db85f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_5f9a1ded436b0.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/c3f0c03a-d69c-4e30-a79c-27d2c634de95/fire_and_water_type_pokemon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/340a0849-df2e-477c-a029-f80acf018efa/xiwopilexezisozi.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/bidawopalim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/521d9b9f-4815-4fd2-9225-000da519c0fb/tinkers_construct_guide_armor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64e65cc9-4cd4-4411-a103-21e402e21227/xulobuwevijosoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a37d78c-c50f-45b9-928e-0527ee8ab79d/55708497670.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/zelunejeruninejafuxodukon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c264f4-19a2-4667-822a-c257eb2572dd/centennial_high_school_baseball_boise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56faa088-adc1-4483-b78b-a5317e9f29d1/49093236212.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_off0000befa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFA 5380 bytes
SHA-256: 093e4d743c1dfc9f4efb83714e8228f7b03e978fe34b2bcab53db52c2b5fbb73
font_01_sfnt_off0000d14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14E 10144 bytes
SHA-256: 544d6e1533da512d0df8bd4c83d944c1d7998fc903db0d90072d364d26f32401

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