Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ff277a7a06f3e5…

MALICIOUS

PDF

83.7 KB Created: 2020-08-19 12:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c39037dfb75321c510bd20bff7637846 SHA-1: f96bb1b356bc77692f50389c3ceff1073bc7df25 SHA-256: e7ff277a7a06f3e52a4f84dd90a5bc56e6582f287d7a653a756749f4db6f8fc6
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same lure URL and references a 'guide', suggesting a social engineering pretext. The PDF also hosts a large number of links to other PDFs, likely for SEO manipulation to improve the visibility of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=kingdom+come+deliverance+unarmed+combat+guide
    • http://files.saloteflorist.com/uploads/1/3/1/6/131606056/mazabaloja_wavonado.pdf
    • http://mudujalik.mifflinfootballgolftournament.com/uploads/1/3/0/8/130814058/7984900.pdf
    • http://files.horsetrekmongolia.com/uploads/1/3/0/7/130776088/dojoreta-zogijazu-sonodu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/boss_rc_3_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/nolulesenileva.pdf
    • https://cdn.shopify.com/s/files/1/0447/4011/6629/files/network_diagram_project_management.pdf
    • https://cdn.shopify.com/s/files/1/0436/0785/1171/files/54920626008.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/pivefebodegopuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/5392954057.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5314/files/alter_ego_a1_cahier_d_activits_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/61980912630.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0448/0565/2637/files/agile_bertrand_meyer.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/xanaluvavugosovaf.pdf
    • https://www.youtube.com/watch?v=JyWqCew1g-A
    • 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_off000100c2.bin
6fc30966895329ff057018b4175d8b86b458f762f1a138e415e5d6d81dfe6246		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100C2 5248 bytes
font_01_sfnt_off00011281.bin
c611e08be28e66c693753836a7f9f74a477fd14a9edec81db015a678944197c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11281 15016 bytes

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