Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa3663e34d8ecda8…

MALICIOUS

PDF

43.8 KB Created: 2020-08-06 12:39:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f58b5c0300398e177f0ee74f300a34b SHA-1: 3b56e4c772879edf4c3dbbd99cb05047cd096856 SHA-256: aa3663e34d8ecda85de73902df43d16d386a7b26265eee4e4c6397887229966c
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=ib+hl+biology+book+pdf', suggesting a lure to download further content. The presence of numerous PDF links indicates an attempt to distribute content widely, likely for malicious purposes.

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/pify?keyword=ib+hl+biology+book+pdf
    • http://files.angelababby.com/uploads/1/3/1/1/131163723/xixexolotoxa-kupawijeju-konudeton-vexodapul.pdf
    • http://files.pwcs3.com/uploads/1/3/1/4/131454620/tededekuxavufusa.pdf
    • http://saxifinug.westmorelandks.com/uploads/1/3/2/6/132681556/perotexesawef.pdf
    • https://cdn.shopify.com/s/files/1/0435/1324/9946/files/bittersweet_symphony_chords.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/6926204009.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/63276104379.pdf
    • https://cdn.shopify.com/s/files/1/0429/2716/1507/files/ruzosiwuduwojet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/venezipaza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zobirunutopuwipigodilig.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/xowinedumadikudove.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/45542828074.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/dark_knight_guide_ffxiv.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_off00006ef6.bin
580ca9e26142ef3b2fe3f5283909e11931114d252daacc509c3f243cd28058b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF6 5060 bytes
font_01_sfnt_off0000803b.bin
5a623ee360e74b2af6c9b369019c926e3ec0c26508e4190052e97ff9efd67727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x803B 10160 bytes

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