Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15c3faf5ec2d432…

MALICIOUS

PDF

47.9 KB Created: 2020-08-17 06:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e37a25c59d00070315bd0ecd79584ec1 SHA-1: 956074dca2315682d89c4892770b3fb942d9ecfb SHA-256: d15c3faf5ec2d432439dd9a828446418458e441efc0c0558b5de7a27fa446fb2
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=root+android+pc+emulator'. It also exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, likely for SEO manipulation or to obscure the malicious redirector. The document body text and a heuristic indicate a social engineering lure to install a browser extension or update, which is a common method for malware delivery or credential theft.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=root+android+pc+emulator
    • http://files.alaskasummerinstitute2020.com/uploads/1/3/0/7/130739991/levuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6600/files/creature_3d_movie_300mb.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/22064433057.pdf
    • https://cdn.shopify.com/s/files/1/0437/0114/1657/files/sample_of_formal_application_letter.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2593/files/kogidope.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zigomotixiwututorevibalu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/dizexowabuwevekajoba.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/bigovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/how_to_save_a_twitter_gif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/98297543364.pdf
    • https://cdn.shopify.com/s/files/1/0432/6283/6891/files/vitisit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6573/files/13202862741.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/29026845516.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_off00007043.bin
22543ed7d1e3c0633d3dbae7a31ce67c8eae5e21b663816529de4b3d7a84bb24
pdf-font-stream PDF embedded font (sfnt) at offset 0x7043 4932 bytes
font_01_sfnt_off000080e5.bin
dbf4a9ca97d9fac9da129c1734d1c19bc3a746dc5a6d0b1468ae3c50cdbb643a
pdf-font-stream PDF embedded font (sfnt) at offset 0x80E5 10620 bytes
font_02_sfnt_off0000a486.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA486 4324 bytes