Malicious PDF — malware analysis report

Static analysis result for SHA-256 e202c39faf3d5089…

MALICIOUS

PDF

45.8 KB Created: 2020-11-08 18:18:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eafa5c70ac1179a565aaccb89b13c42a SHA-1: 1730a7ef4cb924f3cecb45bb73784c44f9fee943 SHA-256: e202c39faf3d508994719f03325bc081f98373517d6f679efefd1e0c455aef72
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are disguised as search results for popular software downloads, such as 'Clash of Clans'. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with the primary malicious URL being https://trafffe.ru/123?keyword=clash+of+clans+download+apk+latest+version. This suggests the document is designed to drive traffic to potentially malicious download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/123?keyword=clash+of+clans+download+apk+latest+version
    • https://guburumo.weebly.com/uploads/1/3/4/3/134322172/25f5a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/paropabaru/69952082745.pdf
    • https://baginalikut.files.wordpress.com/2020/11/math_worksheets_multiplying_positive_and_negative_numbers.pdf
    • https://mepugen.files.wordpress.com/2020/11/laxmikant_polity_notes.pdf
    • https://uploads.strikinglycdn.com/files/7a1805e3-4444-490d-b838-7f9a1442a536/xusefoxono.pdf
    • https://kapenisezu.files.wordpress.com/2020/11/mipusebosotut.pdf
    • https://s3.amazonaws.com/rowubunak/60772657947.pdf
    • https://bofufaporeza.files.wordpress.com/2020/11/carlos_castaneda_journey_to_ixtlan.pdf
    • https://s3.amazonaws.com/fujadabez/godofoxupifo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071fd.bin
4a45329099f4c69cd9070f5de53fc1d0a694bbfcecabfa057ce0e890742df180		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71FD 5364 bytes
font_01_sfnt_off00008451.bin
48429a3e58e8d1e80a85cdd29147e5b5c0e119219c87e14ab28393855be7ca49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8451 11332 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.