Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe7f125cb3cd525…

MALICIOUS

PDF

117.8 KB Created: 2020-08-28 14:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bed1d342294f0acc9773e9d87a0a2a1c SHA-1: cfc73a058f8d552f503b1ba1edaaf12f30853952 SHA-256: 8fe7f125cb3cd525fe58a79bedc492f1c0f3739ea06ad9fd81913c70a3acc40c
150 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, pointing to 'https://ttraff.cc/pify?keyword=keiichi+okabe+nier%253Aautomata+original'. Additionally, another critical heuristic indicates a PDF link farm, suggesting the document is designed to host numerous external links. The ML classifier also strongly flagged this PDF as malicious. The document body contains the malicious URL, reinforcing its role as a lure.

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=keiichi+okabe+nier%253Aautomata+original
    • http://files.jeffvelasquezdds.com/uploads/1/3/0/7/130738779/7a50fea.pdf
    • http://roser.insightcounsellingtoronto.com/uploads/1/3/1/4/131414661/boregetunajilulod.pdf
    • http://wezuro.maggiebandstra.com/uploads/1/3/0/7/130776760/6082229.pdf
    • http://vulopunom.wildrootsnw.com/uploads/1/3/2/8/132814664/wilaraxoli-zituza-fuduxadav-xeguketu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/blockchain_for_dummies_ibm.pdf
    • https://cdn.shopify.com/s/files/1/0448/2298/6914/files/verusisewelisi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/rimomepusupepip.pdf
    • https://cdn.shopify.com/s/files/1/0462/5793/0394/files/magidiganuxazewetedadalot.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/joint_to_joint_cdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/zigegubumebibosatev.pdf
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/mw2_aimbot_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0433/4105/4105/files/5626740389.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/1165345291.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/zijokisizividepiluzifed.pdf
    • https://cdn.shopify.com/s/files/1/0448/3996/0737/files/algorithm_flowchart_and_pseudocode.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f11d.bin
7f1f96ed2dc9ffa1abf466342c1c2efdf4aefc41f9a3ec8b7f2ebc1bf118a6e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF11D 49300 bytes
font_01_sfnt_off000187ac.bin
560549eb98ad287f812ab33f375f85858058732bc01f7fcbaa7fd557dbf6d886
pdf-font-stream PDF embedded font (sfnt) at offset 0x187AC 5260 bytes
font_02_sfnt_off0001995e.bin
9dc3da014b8f6a77350178dd9d9cf76f60c2db3f409dc61763b32dd226083162
pdf-font-stream PDF embedded font (sfnt) at offset 0x1995E 15512 bytes