Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de0a4a3fb818dfd…

MALICIOUS

PDF

49.1 KB Created: 2020-08-17 16:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cfc6a57d709a1c03f15845a252c2568 SHA-1: 2aa01fcc20ee56e522ec42f7be926a80ae7011f9 SHA-256: 6de0a4a3fb818dfd89f99eb82182dddb3a11bd0d4e7523ad5df8ff6aca28cca1
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating redirection to known malicious infrastructure. The primary malicious URL identified is `https://ttraff.com/pify?keyword=bharat+movie+video+songs++720p`, which is presented within the document body. The presence of numerous other PDF links suggests a link farm or redirection scheme designed to obscure the ultimate destination.

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.com/pify?keyword=bharat+movie+video+songs++720p
    • http://files.rockcandynp.com/uploads/1/3/0/7/130776875/nolavo.pdf
    • http://jikejarot.interimarketing.com/uploads/1/3/0/8/130874038/vipesewaso.pdf
    • http://vepezopaw.artreasuresforever.com/uploads/1/3/1/3/131380739/4292005.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/8914280660.pdf
    • https://cdn.shopify.com/s/files/1/0431/7629/6605/files/tri_fold_brochure_a4_template_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6051/files/how_to_use_abacus_maths.pdf
    • https://cdn.shopify.com/s/files/1/0435/6964/3675/files/hollow_knight_blue_lake.pdf
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/the_old_man_and_the_sea_short_summary.pdf
    • https://cdn.shopify.com/s/files/1/0429/1769/1559/files/catholic_encyclopedia_volume_4.pdf
    • https://cdn.shopify.com/s/files/1/0435/7901/5327/files/29372691615.pdf
    • https://cdn.shopify.com/s/files/1/0434/4902/4669/files/32720450366.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e9a.bin
446abf9748b575c1cb447a5283797645e35871a50a05a4cde7355e5871d8609d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9A 5804 bytes
font_01_sfnt_off0000724a.bin
988c3d633a0ac1dda1a20c3768950f0bf2a999e16cfc38da3c8dc34553c8ba24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724A 9832 bytes
font_02_sfnt_off0000942e.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x942E 16164 bytes
font_03_sfnt_off0000a983.bin
5055e63965d1259f0682ce7664e618c2d14627fd164808a7d8bc66bcc57e851f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA983 3616 bytes

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