Malicious PDF — malware analysis report

Static analysis result for SHA-256 48187a1a2eed4b1f…

MALICIOUS

PDF

39.6 KB Created: 2020-08-28 09:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad20e3de685b1923fad255b608584584 SHA-1: 99aa0bb130ffd58e8c60a22565c1380ae590ac1b SHA-256: 48187a1a2eed4b1fdcd4e347168f60c85112b7296bd56727f0940fad1ebd4c58
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=genetics+notes+pdf+download', disguised as a download for genetics notes. This link is intended to lead the user to further malicious content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains, likely to improve search engine ranking for malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=genetics+notes+pdf+download
    • http://zatisexat.lovelaughterandreallife.com/uploads/1/3/0/7/130776131/9920680.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/factoring_polynomials_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/nikasusitofogujujeganuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/rixanotarewej.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/pokemon_fire_red_151_hack_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/neverwinter_leadership_profession_le.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/66434903074.pdf
    • https://cdn.shopify.com/s/files/1/0438/4240/4512/files/33561641141.pdf
    • https://cdn.shopify.com/s/files/1/0430/4132/5207/files/jufizejigitosogikevuvuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/fefixaw.pdf
    • https://cdn.shopify.com/s/files/1/0439/0384/4520/files/multiply_and_divide_by_3_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2402/files/69618692405.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45598155969.pdf
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/92994690135.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005060.bin
d59e21c3b345b3d966d7d941342263723f9c47789bc7b0897bdd30e846ea3ecc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5060 4964 bytes
font_01_sfnt_off0000616d.bin
990525177e8da0ec7b0916b3829e142a282a1281a31d04d7fbb8b86f94d8dca7
pdf-font-stream PDF embedded font (sfnt) at offset 0x616D 10072 bytes
font_02_sfnt_off000083bb.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x83BB 4324 bytes