Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64820a223d05ed5…

MALICIOUS

PDF

45.7 KB Created: 2020-08-08 07:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 953de5fb0e8d22910276b3d405b84e59 SHA-1: bfbdaa0bd11d03b49445224a746427a14bc0d7c0 SHA-256: e64820a223d05ed55fe11c19031f53693b2a26f22dae0dd4944c95eb8534b853
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=blood+relation+questions+in+tamil+pdf`. This indicates the document is designed to lead users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is part of a larger SEO poisoning effort to distribute malicious PDFs. The presence of a 'download button' lure further supports the social engineering aspect of this attack.

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=blood+relation+questions+in+tamil+pdf
    • http://files.sentientcatalyst.com/uploads/1/3/2/6/132695663/86a487.pdf
    • http://files.alanbermanart.com/uploads/1/3/0/7/130739081/badadofavaf.pdf
    • http://files.hideawaylakes1977.com/uploads/1/3/2/3/132303082/8595032.pdf
    • http://files.classichomeinspections.net/uploads/1/3/2/6/132681482/1127678.pdf
    • http://gexare.psychometricdynamics.com/uploads/1/3/2/6/132682090/koxoj.pdf
    • https://cdn.shopify.com/s/files/1/0445/6821/5716/files/basel_3_file.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3057/files/dozobodefalizivivap.pdf
    • https://cdn.shopify.com/s/files/1/0437/6641/5514/files/wexite.pdf
    • https://cdn.shopify.com/s/files/1/0431/7862/3138/files/40k_apocalypse.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/xijorexiwotavodukozaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2932/files/18736648110.pdf
    • https://cdn.shopify.com/s/files/1/0431/3359/9911/files/the_great_kapok_tree_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/kogetisegufa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/88200822421.pdf
    • https://cdn.shopify.com/s/files/1/0431/9975/8498/files/and_but_so_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/9618/5763/files/el_rey_arturo_ylos_caballeros_de_la_mesa_redonda.pdf
    • https://cdn.shopify.com/s/files/1/0433/5730/7039/files/konchem_ishtam_koncham_kashtam.pdf
    • https://cdn.shopify.com/s/files/1/0437/8198/0321/files/jofijil.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_off00006bbd.bin
2d6d2bedb8163cc2cb975d50ef4be5779c609b8cffce90c9435c8c02f57be87c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBD 5360 bytes
font_01_sfnt_off00007de0.bin
d2bec28a89aa1d317374058f651065e3788d7113646d9fa87532b2987aa497f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE0 14180 bytes