Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae3e5de2f73276a8…

MALICIOUS

PDF

34.9 KB Created: 2020-08-23 16:33:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 515906ccda17dcd91bcb7642c6af425f SHA-1: 5ffa2befc954e15cf2b22942af25ab146e120705 SHA-256: ae3e5de2f73276a8ec19bdf7d6ef920c576eec3b04bc5400ef5fdcbd76fe8380
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=basta+acreditar+sarah+beatriz, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other benign-looking Shopify links, suggesting a lure to a malicious site. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.cc/pify?keyword=basta+acreditar+sarah+beatriz
    • http://files.amysteeleillustration.com/uploads/1/3/0/7/130776204/191497.pdf
    • http://files.ceramikhausofcebu.net/uploads/1/3/0/8/130814676/faseje.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/google_play_store_app_install_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/62198305809.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/white_plains_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/6512/1699/files/80491092124.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/vejaduwud.pdf
    • https://cdn.shopify.com/s/files/1/0432/1411/0880/files/introduction_green_revolution.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/59357519446.pdf
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/nomerarenoronafezulanapip.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/21432247258.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_off00004bf5.bin
5e3836216c65b2711673b2a9676d5355deecde859597002123f9ebff22235dbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF5 5236 bytes
font_01_sfnt_off00005db1.bin
d7fc6c6512578146248721b51836e18d6160872e05b326004d8b637eaa23ea96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB1 9752 bytes

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