Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2eb36341b398bc…

MALICIOUS

PDF

45.6 KB Created: 2020-08-31 12:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae093538e996d50dd1555bb94e167c29 SHA-1: 43cbc4c665671df36bedf472e9db2c0b20ab7d21 SHA-256: ea2eb36341b398bcea8b2e0a31dd78ad0fbe33f04102ef0fb19d0cd84ac11fc9
150 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'acrobat reader writer software free download', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external links, many pointing to 'static.usrfiles.com', further indicates a link farm designed to host or redirect to malicious content.

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.com/wix?keyword=acrobat+reader+writer+software+free+download
    • https://static.usrfiles.com/ugd/d54300_ef5cf10f1aeb470b8a4c9716ef6fe304.pdf
    • https://static.usrfiles.com/ugd/80c1db_639839123a394628b064abd35f7b734e.pdf
    • https://static.usrfiles.com/ugd/b8c837_a245929504a444c6b1b6c2df20d37b56.pdf
    • https://static.usrfiles.com/ugd/b8c837_02dd6ffa13a441a082f6696bee891411.pdf
    • https://static.usrfiles.com/ugd/529dbf_ec80e1339da6425296e66aede3b294fb.pdf
    • https://static.usrfiles.com/ugd/defdb4_6866f93bb36549c4934032abd2d57b13.pdf
    • https://static.usrfiles.com/ugd/39cb9d_63729039b59e4749a0b6a513878797c9.pdf
    • https://static.usrfiles.com/ugd/97aff7_0cf7e2add0504ad38d55bb96a102fe92.pdf
    • https://static.usrfiles.com/ugd/b8c837_8ed5dcf84bea4e1887ed27bc043eac2f.pdf
    • https://static.usrfiles.com/ugd/086daf_6128c399dfdb4413841b8fbae038931d.pdf
    • https://static.usrfiles.com/ugd/3b47cb_9cf3ea468eb24733b2996ae1de1f0732.pdf
    • https://static.usrfiles.com/ugd/b8c837_034fe068f00c4feab4e6424493976977.pdf
    • https://cdn.shopify.com/s/files/1/0435/2753/6799/files/90612591524.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/aichinger_regina_coeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/5112800816.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_off00006e36.bin
82d55eadd27ad754f2b482276d91dadf46adb528d1ac4ea40c1112992bd7027b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E36 5236 bytes
font_01_sfnt_off00008026.bin
590b3709435151e512713a7594095c23da112bec6b3b59d29df7c8458b88b618		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8026 12824 bytes

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