Malicious PDF — malware analysis report

Static analysis result for SHA-256 75bddf3b5f1638e0…

MALICIOUS

PDF

37.7 KB Created: 2020-08-29 01:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bef0d3d2d937ab0f81467a6cfc526f7 SHA-1: 6da04ed7dcafdb6753c63e8ab7534fa2480628be SHA-256: 75bddf3b5f1638e032eb5c0c2eef68c2f49a6fd9e9eeafc143aa1be6156277d1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=fnaf+3+apk+free+download+android'. This URL is presented within the document body, disguised as a download link for a game. The PDF also contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation to increase visibility of malicious content. The primary malicious IOC is the ttraff.com redirector.

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.
  • 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.
  • 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.com/wix?keyword=fnaf+3+apk+free+download+android
    • https://cdn.shopify.com/s/files/1/0432/5199/0691/files/guzheng_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewefezagabujam.pdf
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/ielts_sample_test_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3277/files/sixedanusudatagup.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8918/files/tapolulegaku.pdf
    • https://cdn.shopify.com/s/files/1/0437/9161/4114/files/family_tree_chart_template_10_generations.pdf
    • https://cdn.shopify.com/s/files/1/0438/4446/8898/files/walomemilerer.pdf
    • https://cdn.shopify.com/s/files/1/0445/6343/1588/files/blood_pressure_readings_chart.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/lanage.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jotinu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4982/files/bosume.pdf
    • https://cdn.shopify.com/s/files/1/0435/4395/3567/files/arraylist_in_java_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0439/6105/7438/files/dubodavodulorixonadubow.pdf
    • https://cdn.shopify.com/s/files/1/0431/4405/2885/files/lenosej.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6165/files/40355663733.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057d2.bin
d5bf163a6936db58005181188f76c9c68d5b17b9595f53c1412ad9be4d79c991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D2 5132 bytes
font_01_sfnt_off00006972.bin
3252dd0051927a9c27f9b80e0886e9706262772ce24cedb5d42489e3b7af45f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6972 9528 bytes

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