Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef0aae5c3980134…

MALICIOUS

PDF

50.9 KB Created: 2020-09-01 01:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c02a4b95d3d45fb9bf9c4b0d92e206d3 SHA-1: a05831f0fb7a7997b2a3f7066d8ab788b7f5e59c SHA-256: 3ef0aae5c398013454837217fd23b5cdbb55564089dad0f85106944a04c1da97
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, https://ttraff.club/wix?keyword=cavatine+trombone+pdf, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be malformed or heavily obfuscated, but the presence of numerous links and the malicious redirector strongly suggest an attempt to lure users 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.club/wix?keyword=cavatine+trombone+pdf
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/4874394650.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/88537455144.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/harbor_freight_jigsaw_review.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_0f250f812bad42a5b2396395cc597016.pdf
    • https://static.usrfiles.com/ugd/e3834b_5e18eabf8c7543869d09df1fbc7bea36.pdf
    • https://cdn.shopify.com/s/files/1/0428/0388/8287/files/32653603681.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/puluxunakorigesu.pdf
    • https://static.usrfiles.com/ugd/3aee12_c0f2c70a3d7841249e40c08ac762a2ec.pdf
    • https://static.usrfiles.com/ugd/9e53d4_4cad3b49557e450c925984b0e7a86504.pdf
    • https://static.usrfiles.com/ugd/b8c837_9522a37077854400a4d90deb1b986093.pdf
    • https://static.usrfiles.com/ugd/6cfc61_c90d0d2e293e448784e2638bfcde00fa.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_off00006703.bin
9ffda6d0e6d093db4b9a11f3ca038133dc03412d9ba8b0bb84a4128eab67a0ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6703 4988 bytes
font_01_sfnt_off000077df.bin
3d1c6722ea244fce9cae627edf9d289ee6bae4ff2f97f6a614bc1b9c6752ebd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DF 10420 bytes
font_02_sfnt_off00009bbd.bin
184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BBD 16120 bytes
font_03_sfnt_off0000b0a5.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A5 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.