Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc9f3ffc5c55c22…

MALICIOUS

PDF

40.1 KB Created: 2020-08-11 15:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78e2d2ac98e5fd3ee84669324d13a9b9 SHA-1: 31074b7ae2df0d186bb5bde48636d538bf5a7c65 SHA-256: 9fc9f3ffc5c55c2265d013130ed738c0958ccb59f7453ad7dd67935caa2b828e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=carcassonne+star+wars+expansion+rules+pdf. This suggests the document is designed to trick users into visiting a malicious website by disguising it as a legitimate PDF download.

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=carcassonne+star+wars+expansion+rules+pdf
    • http://files.tallsycamorecampground.com/uploads/1/3/1/4/131483337/d7118.pdf
    • http://files.zhuangguo94.com/uploads/1/3/1/6/131637372/2998644.pdf
    • http://files.tomwellereditor.co.uk/uploads/1/3/1/4/131409017/gujijidifuj.pdf
    • http://files.lynnmiriamceramics.com/uploads/1/3/0/8/130813988/3330.pdf
    • http://vubabaxe.heymarcomusic.com/uploads/1/3/0/8/130874278/736771.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5404/files/arduino_wifi_library.pdf
    • https://cdn.shopify.com/s/files/1/0452/6574/8130/files/class_10_english_literature_reader_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/81430558657.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/zumudidikowonemevaroregu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3277/1750/files/tufedifutogidadaxumu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/pulse_oximetry_nejm.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/90467617428.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/body_reading_visual_assessment_and_the_anatomy_trains.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/king_of_kings_movie.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.pdf
    • https://cdn.shopify.com/s/files/1/0433/0464/8859/files/jawipilowepexarunato.pdf
    • https://cdn.shopify.com/s/files/1/0437/2047/4779/files/atharva_veda_in_marathi_free_download.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_off00005e19.bin
910f7f9a69cccb773ea4ea70885063290b475bbfee43f0878660f964742bbfd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E19 5212 bytes
font_01_sfnt_off00006ff3.bin
1d7d7e2ea1d9f62d857bb139826955c24ee5f93c9a933dea8fd490229b162bd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF3 10428 bytes