Malicious PDF — malware analysis report

Static analysis result for SHA-256 0549fd46eab3d63f…

MALICIOUS

PDF

48.1 KB Created: 2020-08-07 19:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a4e57ded611861622125dbd742192f8 SHA-1: 6755830eb518471cceca2fe34e5f93557b90cca1 SHA-256: 0549fd46eab3d63ff9a1253db59ce19fdf518b14dd6b9950963b5a313e32678a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating redirection to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains URLs that are consistent with a link farm designed to distribute malicious content or facilitate phishing.

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.cc/pify?keyword=class+dojo+monsters+pdf
    • http://files.drumlessonshansmuer.com/uploads/1/3/2/3/132302802/xemoxiwelat.pdf
    • http://zexabapa.torone-project.com/uploads/1/3/2/6/132681342/65a23baddb58c.pdf
    • http://files.themslist.com/uploads/1/3/1/3/131398419/42879b7.pdf
    • http://files.wahawkbands.com/uploads/1/3/0/7/130740217/memejov.pdf
    • http://files.lookandlivethrulyme.com/uploads/1/3/0/7/130776458/e2a9119bb2a7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/8883/0873/files/beguduzesiverem.pdf
    • https://cdn.shopify.com/s/files/1/0439/7491/8302/files/59433216312.pdf
    • https://cdn.shopify.com/s/files/1/0437/2827/3562/files/jejazetusonatunamupotizaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/jemunedipekator.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/gojewexomexe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/tokavoxamulalunapaxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/92334849220.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/12234224076.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/dijitugiriferibowizosuzo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/pdf_aoac_official_methods_of_analysis_volume_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/26700051137.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006925.bin
09c1ec3ba1928680cc23344110eb437d31b87466c52daabfc9225302a8016d4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6925 5168 bytes
font_01_sfnt_off00007a9c.bin
27d38a287b48b2bf45f9e61a607827c3e239794cec2dbdf1ad79eb6f7324d095		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9C 10204 bytes
font_02_sfnt_off00009d9b.bin
230df8017a85ea93a5c886159708d72349b7227190d262bf2e9082262302ac19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9B 16384 bytes

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