Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1dee0a9cf4da5b…

MALICIOUS

PDF

48.5 KB Created: 2020-09-01 15:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9677584ad325797598e132ffb77381af SHA-1: 5837e5b771e643478012d70d809b5c965a6a7799 SHA-256: 4d1dee0a9cf4da5b099d25df1f1c903801fd339ee37c1c6be0d48591febb62b7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=az+video+recorder+pro+apk'. This URL is presented within the document body, suggesting a social engineering lure to download software. The file also exhibits characteristics of a PDF link farm, with numerous embedded links to Shopify-hosted PDFs, likely for SEO manipulation or to obscure the primary malicious destination. No scripts were extracted from this sample.

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.link/pify?keyword=az+video+recorder+pro+apk
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/90447060857.pdf
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/66767921136.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/fallout_4_move_npc_to_player.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/menilefajuzilijok.pdf
    • https://cdn.shopify.com/s/files/1/0436/0211/6772/files/94491027914.pdf
    • https://cdn.shopify.com/s/files/1/0438/0393/4877/files/1439341240.pdf
    • https://cdn.shopify.com/s/files/1/0440/3996/2774/files/floating_action_bar_android_example.pdf
    • https://cdn.shopify.com/s/files/1/0438/1124/2144/files/bihar_si_mains_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/guliwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/bozajijomesotuke.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/mekutavevefeku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/zezuxoripeki.pdf
    • https://static.usrfiles.com/ugd/4f270c_2f5ccda960954ecc8744e2acdcf37934.pdf
    • https://static.usrfiles.com/ugd/7e6083_b21c02e6adc04ede85a5e811fc73d126.pdf
    • https://static.usrfiles.com/ugd/9e53d4_f9771864b623408db8c5f5ea65e6090c.pdf
    • https://static.usrfiles.com/ugd/f7fbc8_ff666557ee2642dbabd80f2e567fb252.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_off0000666f.bin
c55cdd07f6c6fb5ede3d2b9cc97701295bdbf38b0284527bbd4294d790c03c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x666F 5020 bytes
font_01_sfnt_off000077a6.bin
dfba1fcb743c946552d8d6658e8cef54b33194d2c299957a970757bdb1eab881
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A6 12172 bytes
font_02_sfnt_off00009f87.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F87 16092 bytes