Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b42695ee896b7b4…

MALICIOUS

PDF

41.0 KB Created: 2020-09-07 06:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f6c08b2ae42343060ddbda4dc8c0df8 SHA-1: 889fa544c93c6274cc223515baabb39992c66840 SHA-256: 0b42695ee896b7b42b117e37b305a42bb473f41a1d497a000247d3506d7f8e8d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to external resources. One of these links, 'https://ttraff.me/wix?keyword=ganesh+vandana+song++djpunjab', is identified as a malicious redirector. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted from this sample.

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=ganesh+vandana+song++djpunjab
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/9904c2_a8070566ae3349a58f006481b3f5cc59.pdf
    • https://static.usrfiles.com/ugd/717a42_453417b03c0d44d38a6908730084ecf9.pdf
    • https://static.usrfiles.com/ugd/2074c9_1bdba68ea88841f1bf499522b084c9f5.pdf
    • https://static.usrfiles.com/ugd/e33828_509bc017ee1d4dd2a819ef0b45062b6c.pdf
    • https://static.usrfiles.com/ugd/badafb_2d5a8111d8c04ffb90e909cc001af6cd.pdf
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/best_photo_background_changer_app_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1089/1680/files/42111651603.pdf
    • https://cdn.shopify.com/s/files/1/0439/8009/5646/files/55874816374.pdf
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/california_dreaming_drinks_menu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0530/3205/files/56546036681.pdf
    • https://static.usrfiles.com/ugd/ecec20_de0bc415b4b04966afce855d08f16416.pdf
    • https://static.usrfiles.com/ugd/120f26_fab886ecc410442789448b683c78b5c0.pdf
    • https://static.usrfiles.com/ugd/81d6a4_f576a94d58a44aa79e990222f54c0294.pdf
    • https://static.usrfiles.com/ugd/b8c837_17a5fc63bfaa451aaf22abc72bd1edbe.pdf
    • https://static.usrfiles.com/ugd/d954c5_15c51105b12945439c0242923458fb78.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_e6ecab13c638427c9b4786e432712799.pdf
    • https://static.usrfiles.com/ugd/7603ae_3a4aef5395db4e0aa0540c35ed75461e.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_off0000558e.bin
1d86b112a1c8a68aa6a35494527b9d810ca9d01968b632468fe7d01c3e7b74aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x558E 5400 bytes
font_01_sfnt_off000067f8.bin
e0d1807fe56bd9d48d2d872ffe88715c977db3fd8d81682a21eec99d9b846f3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F8 14452 bytes

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