Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c4a1ee45f21916…

MALICIOUS

PDF

47.2 KB Created: 2020-09-06 20:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e24e1a42a8477a18e06c1da799e3956 SHA-1: 47bee20c064eb2c7db79c7b256fd10741efe56bc SHA-256: 70c4a1ee45f2191664d76dff15f17c06943e3dfb59699d6e2238c8ef93787e02
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.me, which is disguised as a 'wow warlock pvp guide bfa'. The PDF also hosts a large number of external links, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs confirms the intent to redirect the user to potentially harmful 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/pify?keyword=wow+warlock+pvp+guide+bfa
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/f515ca_ff91e830c8834d69a2c9586b3ce64f73.pdf
    • https://static.usrfiles.com/ugd/e5412a_0ab65805da4743a9ba0f662012ffd1b8.pdf
    • https://static.usrfiles.com/ugd/dd6616_d46740bb87b7427a9cfbd1c222868697.pdf
    • https://static.usrfiles.com/ugd/6c032c_6b27fbed3ec948d4bc661ee74583a849.pdf
    • https://static.usrfiles.com/ugd/6c313a_7a4ab01b91144fadbce28eed21563ad7.pdf
    • https://static.usrfiles.com/ugd/113e89_14a685be95c742b490c83e161ea8eaf6.pdf
    • https://static.usrfiles.com/ugd/e1c37d_b01863ec6c754aa8944e9a496d9deadf.pdf
    • https://static.usrfiles.com/ugd/33a16d_b7d65650c9f34b939aafbde776ad2087.pdf
    • https://static.usrfiles.com/ugd/9f06f8_21ef0b34436842938041070102231faa.pdf
    • https://static.usrfiles.com/ugd/bc84a3_6aca41099d08487fbba3e5ce46afce12.pdf
    • https://static.usrfiles.com/ugd/90c678_885dd4d228f544ac9305a1d43e7a7705.pdf
    • https://static.usrfiles.com/ugd/b8c837_bbc68f1b29804bc09ad3a108ee8fc692.pdf
    • https://cdn.shopify.com/s/files/1/0432/5159/7480/files/after_effects_free_template_logo_animation.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4405/files/37375864735.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a30.bin
c6e5d911bc2a34585cca0c767a81ec3e6eeadc3ee1093cc1211d3074dd5ae8e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A30 5516 bytes
font_01_sfnt_off00008d22.bin
18f16a6d9883a4bfbc8e7ce5c4e485f97681ee312964d7859513b442b6789372		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D22 10352 bytes

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