Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4fae581aa57003…

MALICIOUS

PDF

54.9 KB Created: 2020-08-04 15:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 579745ace83bd804e89d42bc07c9208e SHA-1: 8c7d81965012efe096f0653b1585247b292819b3 SHA-256: ec4fae581aa570037d95c8ba4bddba70dc05c541bc882308fc034c93115a9058
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=equality+act+2020+scotland+pdf. Another heuristic identified a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The document body contains garbled text but includes the same malicious redirector URL and a benign-looking Shopify URL.

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=equality+act+2020+scotland+pdf
    • http://files.stbernadetteofantioch.org/uploads/1/3/2/7/132740873/vaxis.pdf
    • http://files.hannawhitecoaching.co.uk/uploads/1/3/1/3/131384718/3466006.pdf
    • http://files.briorecordings.com/uploads/1/3/0/9/130969658/xivat-lawolinoninewid-sigokejame.pdf
    • http://files.keewahla.com/uploads/1/3/1/3/131379268/bc27e06cbfd.pdf
    • http://puluripo.sharingfamilymemories.org/uploads/1/3/1/4/131406749/vebapoxobizu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/dafabebizozudusasukusemux.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/demosirurize.pdf
    • https://cdn.shopify.com/s/files/1/0434/8326/7234/files/sofugikakokejuzawesew.pdf
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/sixemeridadu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/disable_xbox_game_bar.pdf
    • https://cdn.shopify.com/s/files/1/0437/1913/1285/files/pilerurisagovavazakeriner.pdf
    • https://cdn.shopify.com/s/files/1/0432/3259/2040/files/73117197052.pdf
    • https://cdn.shopify.com/s/files/1/0432/0008/6175/files/18032449957.pdf
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/80082604332.pdf
    • https://cdn.shopify.com/s/files/1/0439/7950/5822/files/convert_cdr_format_to.pdf
    • https://cdn.shopify.com/s/files/1/0434/2313/7943/files/28777569854.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/nurebowudoroximavinijus.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_off000099bf.bin
b2806c11795a6a4b7987e078b61b8f7ba1e7d639e6322dd18785d4b5bf353f80
pdf-font-stream PDF embedded font (sfnt) at offset 0x99BF 5512 bytes
font_01_sfnt_off0000aca1.bin
42fc6df45fd1053e6a27068a1154eb303c6abcad554a222f71d043679d0e61cd
pdf-font-stream PDF embedded font (sfnt) at offset 0xACA1 10076 bytes