Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6fcc96611ba5de0…

MALICIOUS

PDF

98.0 KB Created: 2020-07-28 23:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58b336992c037ce038c23fc3f3ac8a5b SHA-1: e84dff28f0000c54a34e65ae117bf30611a668c3 SHA-256: a6fcc96611ba5de0518ae2ec26c4e3414e701942aa4af60f2ffe3f1ad69b0f85
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF link farm'. One of these links points to a known malicious redirector, 'ttraff.ru', which is likely used to direct users to further malicious content or phishing sites. The document body, though heavily obfuscated, contains text related to 'Bangla gaan mp4 movie', suggesting a lure to attract users to click on the embedded links.

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=bangla+gaan++mp4+movie
    • http://files.vhsinstrumentalmusic.com/uploads/1/3/1/8/131857983/a9a32258d018.pdf
    • http://files.fitupfabrication.com/uploads/1/3/1/3/131398419/nejaseja-rudabo-werudufixiri.pdf
    • http://files.jwfworld.net/uploads/1/3/0/8/130813855/a820f.pdf
    • http://files.realhomecashbuyers.com/uploads/1/3/0/7/130776724/dfbbe57e2793e0.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/pumaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/43032400030.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/xigitagoze.pdf
    • https://cdn.shopify.com/s/files/1/0438/0003/5485/files/ketoxakuvukelitobutavow.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/terifewofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1420/1241/files/6156605553.pdf
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/5783779181.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/mupapuluzov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011eb7.bin
6daf754647caca219e9f1a23ae78d8c9ba540d509e32c46c755149a32ca8f8e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB7 4772 bytes
font_01_sfnt_off00012ed2.bin
f9ebe9810b81878647a2c64e9ec1632a0a810de38fd127395e5cb79f10cfb794
pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED2 4648 bytes
font_02_sfnt_off000140b0.bin
687fbd8d04e75db5f4d346591114ef0b59ed2b7d26a5388c2a0d81e150570acc
pdf-font-stream PDF embedded font (sfnt) at offset 0x140B0 10560 bytes
font_03_sfnt_off000164f1.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x164F1 16036 bytes