Malicious PDF — malware analysis report

Static analysis result for SHA-256 495e9d6dcb27c36f…

MALICIOUS

PDF

56.4 KB Created: 2020-09-19 06:05:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c40da91d6dec98bb33e7963221d2d362 SHA-1: 8385910006f46a5540afe78a1c324d3369c1fccf SHA-256: 495e9d6dcb27c36f5f3da0921775de9552aade3e3a32f3c3184a436d3370bfca
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=cm+launcher+3d+pro+apk+download+revdl'. This URL is presented within the document body, suggesting a lure to download software. The PDF also contains a large number of external links, flagged as a link farm, further supporting a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=cm+launcher+3d+pro+apk+download+revdl
    • https://ce893a07-913a-482b-b5b3-66df2c4ed6c2.filesusr.com/ugd/fdee49_0e5b8611f1e9416d83b3dbb6bf5f361b.pdf?index=true
    • https://35c1e4e3-b371-490d-b83f-40c1cfc3fc79.filesusr.com/ugd/6908d7_aa0d96ee88ea4deea6e5e7aeef0e6100.pdf?index=true
    • https://ec23c3a7-3f69-4d4d-aa81-1b091de141b5.filesusr.com/ugd/479fa9_cf832a0959834617a0426ade5ed6560a.pdf?index=true
    • https://13e745b3-673a-4159-bb2b-8d2ef6a8f895.filesusr.com/ugd/c88839_5da44ad54e314a629a3ec1ffe52aad79.pdf?index=true
    • https://b47ada7b-39e7-4885-9fb4-e5ab77775629.filesusr.com/ugd/66f3f9_5953a4703b28441aadb3988621664b7c.pdf?index=true
    • https://74efbbbf-a174-485a-90a6-14f519c283fa.filesusr.com/ugd/dc98cc_f8483ee5f3da4f5e93b1d9925ed1874d.pdf?index=true
    • https://ed7e8f3c-b852-48d3-984e-f662174ade23.filesusr.com/ugd/0779a3_e022540744bf44ae917a691c0a4d27a0.pdf?index=true
    • https://9a7326ff-7fb6-4389-adfd-a472126bf0af.filesusr.com/ugd/05e3ad_308170d2af8243fba57f3e2a21f2783d.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/0780/2518/files/53017405370.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/98459631970.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0428/files/76540815380.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/adobe_acrobat_pro_to_word_converter.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/cambio_climatico_concepto.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/8664939423.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0840/files/lisujagovipurizuvukesanew.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_off000072c1.bin
d7aa2c9458caf770dd152a95f8d2efe7d0a7054223923e550b32e00b31e0f810
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C1 5420 bytes
font_01_sfnt_off0000850e.bin
f8f057f4e2e12d15969c5a56f2d34045ac8552f23a93730603f5b6e262f61849
pdf-font-stream PDF embedded font (sfnt) at offset 0x850E 13232 bytes
font_02_sfnt_off0000af36.bin
cd53625a2cfc0d5b23a32ad075afcb3e326c3a3feb2badcaba8b440e0b628092
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF36 10720 bytes