Malicious PDF — malware analysis report

Static analysis result for SHA-256 93166297b1d1f897…

MALICIOUS

PDF

43.6 KB Created: 2020-08-24 07:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e694f2cd072b457eb079ccc80e74d52 SHA-1: 72100b834980085edd08fafcc51372c8808e1f0e SHA-256: 93166297b1d1f89725f1910a470f87d396a8cb30b006eb3f557c76216a88dd90
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Kindle cloud reader to pdf online' and includes the malicious URL. This suggests the document is designed to trick users into clicking the link, leading them to malicious infrastructure. No scripts were extracted from this sample.

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.com/pify?keyword=kindle+cloud+reader+to+pdf+online
    • http://files.triplejackproductions.com/uploads/1/3/0/9/130969370/1166027.pdf
    • http://wuduwu.bidefordbeehivesbb.co.uk/uploads/1/3/1/6/131637136/fovotizemeduriso.pdf
    • http://files.iwstreecare.com/uploads/1/3/2/7/132740479/wogupu-zukokitoruwogog-zikezugufada-pubuzesilas.pdf
    • http://files.40yearsofbillduke.com/uploads/1/3/1/4/131406807/nutamuvuv_zifixusawevoliz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2286/8892/files/24577450875.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/96895970339.pdf
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/adverbs_of_manner_exercises_islcollective.pdf
    • https://cdn.shopify.com/s/files/1/0431/0931/8813/files/22996062798.pdf
    • https://cdn.shopify.com/s/files/1/0431/9153/3725/files/mokinurepudemopujij.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3434/files/alcalosis_metabolica_hipocloremica.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0432/4143/9400/files/lopedulesijezijizedupafis.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/dhl_air_waybill_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/6133/0598/files/21921585453.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3863/files/bhagavad_gita_as_it_is_by_prabhupada.pdf
    • https://cdn.shopify.com/s/files/1/0431/2855/3634/files/d_d_acquisitions_incorporated_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0464/6574/5054/files/92194054890.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7615/files/31412044324.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_off00006b27.bin
92b47d74009b7fa919db6b6a250bdcdb6e4c668be3dd6605444987bbb75da917
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B27 4940 bytes
font_01_sfnt_off00007bf9.bin
b43d4592cdcd3a2c246ad1ad25897b8137fc5f5b6cbed3a67b41da4885805ec3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF9 11628 bytes