Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5879ad3bc0c754…

MALICIOUS

PDF

45.1 KB Created: 2020-10-26 22:35:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 204177be4c34620ed59aa9d4973ddf93 SHA-1: 92d8863c1afbd7c7ab4d07763708fa2c04a5e0fe SHA-256: ce5879ad3bc0c7548ef28b6ef0ef336d4c4f7282b3001afb22f676169d8d901f
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lure users into downloading potentially harmful content. The document body text explicitly mentions "clash royale hack apk 2019", indicating a social engineering lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.me/123?keyword=clash+royale+hack+apk+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f8d32c38ef05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5f8bbb19db5b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388181/normal_5f8d8f4f3633a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374843/normal_5f8e4fc33bd5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f875e41bca9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5f8a87b0833f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f874789f1138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388178/normal_5f9529df99593.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369310/normal_5f8fe25245baa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_5f942c070379d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b8c0c415-04a5-401d-a83c-463cf3e9384f/botapigusuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb1313e-f2bb-467b-adf3-de5c0483be74/how_do_you_get_pokecoins.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fab0a94-e8fb-44e8-af13-c13d0cce7f49/peviwodido.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/pivuwarozebixa.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/c_programming_tutorial_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/31222773645.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6653 5248 bytes
SHA-256: 24a5efface7660008cdfe8ed90b15410212a592df0240ecce4da872fe1993cfb
font_01_sfnt_off00007840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7840 9720 bytes
SHA-256: aaf13654c214451d450f996464f22ca1f9867c022a1e79844f1b446cda008727
font_02_sfnt_off0000997f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x997F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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