Malicious PDF — malware analysis report

Static analysis result for SHA-256 b50f0b8ee43bf1f8…

MALICIOUS

PDF

64.6 KB Created: 2020-08-20 08:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aba569206c5c3a643c588a56f8cfb4c3 SHA-1: 162c5d0625ca2c5ec90eb03df5f5b451708eb862 SHA-256: b50f0b8ee43bf1f87b30223017796b9a890593d8bbe656114ab1d0f4960097de
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a malicious redirector link disguised as a download button, aiming to lure users to a malicious site. The document body, though heavily obfuscated, contains the URL that is also flagged by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, likely for SEO manipulation or to host further malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=telugu+bluray+video+songs+free++websites
    • http://desif.lethbridgeelectrical.com/uploads/1/3/0/7/130776603/vejawaxisatuw_toxezeworisam_tupurolow.pdf
    • http://files.pg862.com/uploads/1/3/0/7/130739155/4830957.pdf
    • http://files.charitysharonwhite.com/uploads/1/3/0/9/130969211/5760251.pdf
    • http://files.doodledesignsandrhymes.com/uploads/1/3/0/8/130874612/kofutuguregoxad.pdf
    • http://bltlly.com/122sbtsongs
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/materi_akuntansi_sebagai_sistem_informasi_kelas_12.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7409/files/equation_of_a_line_two_points_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/cutting_board_designs.pdf
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/tixagujivugobafuriwelat.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8711/files/witujevudipaguwer.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/96340549711.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/42873473450.pdf
    • https://cdn.shopify.com/s/files/1/0431/2524/4053/files/sawogulewevu.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000becc.bin
06e58cfb14cb061fbff95274a5c97c4b36131f795add5260e82376f34163985a
pdf-font-stream PDF embedded font (sfnt) at offset 0xBECC 5416 bytes
font_01_sfnt_off0000d160.bin
014edb621b3e6fd5c2a1d81ce7accd8c34d21e51b9dea0ea2c3926f9789b8355
pdf-font-stream PDF embedded font (sfnt) at offset 0xD160 10588 bytes