Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a59994f4c2f11d1…

MALICIOUS

PDF

65.0 KB Created: 2020-08-31 09:17:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6fe04984808ff2a5132818406c30268 SHA-1: 50a10f5f699ddeacad022ae398ea9a3fd971bc2e SHA-256: 5a59994f4c2f11d1fdb32c83087bcc385bba94fe6c87408ce5d627c9a46353ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a deceptive lure related to 'Totally Spies' subtitles, which is a common tactic for phishing or malware distribution. It embeds a link that redirects to known malicious infrastructure, indicating an attempt to lead the user to a harmful site. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.

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=totally+spies+english+subtitles+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_8657dfc8d9494d70855fa76bb9c1a0e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e61b36b44b9497eb033aba670c7ed9b.pdf
    • https://static.usrfiles.com/ugd/6908d7_73b459f2daa24ac89af91f39abd591f2.pdf
    • https://static.usrfiles.com/ugd/a86d68_7ad242bc0d264d6bba24fb06a6ec3383.pdf
    • https://static.usrfiles.com/ugd/af0aa9_5c83cbb0de5d400b90b46e3b5748d42b.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2556/files/94143462634.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/jefefamipobekakak.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/51921411765.pdf
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/gasonofi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/xevizadaludinosabavaro.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e8ed6ff45f241b4af717fcd1fba23be.pdf
    • https://static.usrfiles.com/ugd/b8c837_404531e346b44571b85ab469ac98a2ca.pdf
    • https://static.usrfiles.com/ugd/63d3ad_f0c995b1cf4448a29407014868cee7e1.pdf
    • https://static.usrfiles.com/ugd/69b86f_0b8c9dec7e394f0b8530d678ddd7c5a4.pdf
    • https://cdn.shopify.com/s/files/1/0432/2964/2911/files/97769413925.pdf
    • https://cdn.shopify.com/s/files/1/0435/2642/2696/files/19th_century_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/19308010861.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_off0000c18b.bin
e50e14c32639db1461977fdd44eab7e3643a18767ae7a39ef1a1dae17f0c6d0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC18B 5408 bytes
font_01_sfnt_off0000d401.bin
1b5be7340d5da3240a3e3ef5a0f97c15fd4d605bc45b6d63aabdb4cdf1fb1349		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD401 10168 bytes

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