Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5465ea3b8e253b9…

MALICIOUS

PDF

45.5 KB Created: 2020-09-08 19:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f57f68db24058e72c88c03b78590d8df SHA-1: 6e0efd064d00c90dc8a38bd1cd362efe84e989e3 SHA-256: a5465ea3b8e253b9f0264bad169ca8795d2e6a43d5d2d5f68c3bd1cf7abe945e
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=faded+piano+sheet+music+hard'. This URL is likely used to redirect users to a malicious site for phishing or malware delivery. The document body, though heavily obfuscated, contains references to sheet music and the malicious URL, reinforcing the lure. The presence of a large number of external PDF links also suggests a link farm for SEO manipulation or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=faded+piano+sheet+music+hard
    • https://static.usrfiles.com/ugd/ce77c6_b76719e7854c4259a3d5618794667fa5.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb85a69704e54eceb19bf28d159057f5.pdf
    • https://static.usrfiles.com/ugd/edb4a7_7b0d58d538c942c8ae9e1c99742625d7.pdf
    • https://static.usrfiles.com/ugd/b5472a_9cecf7de791447dbbee298d0d9e3ce1f.pdf
    • https://static.usrfiles.com/ugd/1df9ea_e2aab566f1a34ba58a7090f732eca3fe.pdf
    • https://static.usrfiles.com/ugd/c63dba_fe80d35630a84956bb3c407ee625c12b.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/noworeladarakakepipaxajev.pdf
    • https://cdn.shopify.com/s/files/1/0429/2221/3542/files/25178303628.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/95596516571.pdf
    • https://static.usrfiles.com/ugd/b8c837_02fb678a846046bdaea36084b9351022.pdf
    • https://static.usrfiles.com/ugd/9df9d6_4e9673b698cd4849b1306737ebad7e79.pdf
    • https://static.usrfiles.com/ugd/c3f88d_60d5fa949ec340d280e74e0154672709.pdf
    • https://static.usrfiles.com/ugd/b8c837_0444f4670e5641759cd886d5c46e78c8.pdf
    • https://static.usrfiles.com/ugd/0dd040_4512944ebe554bc89debfaf58729aa71.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_off0000519c.bin
43faae140cbb15b1e8e6781226dcea1db928cfeaa64b8b8e386bac737be4816a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x519C 5236 bytes
font_01_sfnt_off0000633d.bin
66bee1d5cc67af8160d4ba785d3f3f7abda6b94ee4593c74da1381b855239c67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633D 15892 bytes
font_02_sfnt_off000093a6.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93A6 16204 bytes

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