Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4dde23b905ffdb1…

MALICIOUS

PDF

34.2 KB Created: 2020-08-22 11:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e9c24bb10b8bad3b660d1bf474871dd SHA-1: 396377b7a904d545a9b9238589eb6eb8adbf7179 SHA-256: c4dde23b905ffdb12fa3e991d5ccc856f61d7b609b2650e2eec92c8c07d455e0
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=template+ableton+live+tech+house', is flagged as a known malicious redirector. The document body contains garbled text, but the presence of the malicious URL and the link farm heuristic strongly suggest a malicious intent, likely to lure users to a compromised site.

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.ru/pify?keyword=template+ableton+live+tech+house
    • http://pijin.brijcommunity.org/uploads/1/3/2/3/132303354/mixawav_lunikufazujakoz_nobikok_segipegaxesol.pdf
    • https://cdn.shopify.com/s/files/1/0432/0863/8632/files/anemia_megaloblastica_embarazo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/download_belajar_tajwid.pdf
    • https://cdn.shopify.com/s/files/1/0434/5682/3453/files/centralized_purchasing_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/wolituzifupetedefuwox.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/saturated_vapour_pressure.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/93159928723.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5527/files/44603630610.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/wotlk_leveling_guide_horde.pdf
    • https://cdn.shopify.com/s/files/1/0429/1048/2588/files/weralenerarer.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/ip_prefix_number_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/arcanist_feat_5e.pdf
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/12380521255.pdf
    • https://cdn.shopify.com/s/files/1/0435/3907/1125/files/best_10_rpg_games_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/8833/8330/files/jubilezaninunuwumaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/fha_condo_approval_guidelines_2019.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_off0000482c.bin
6588577f6470ffe742ac8b86e9e50890c610cbbb57576fd1d9ab8f321f51fd01
pdf-font-stream PDF embedded font (sfnt) at offset 0x482C 5224 bytes
font_01_sfnt_off000059c8.bin
a8374ba6ca64f60256a12208143d7399879b078b6530963821d449732bd4dfc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x59C8 9972 bytes