Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0204231bcaa0592…

MALICIOUS

PDF

38.2 KB Created: 2020-08-27 15:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03e7a7649fa2d95d5f5674c7c9a853f8 SHA-1: f4b01e5599236e75ab5cf6e3b66fb7a79853754a SHA-256: c0204231bcaa0592754f86272df1fa68b34ac32a8ff47eace9a22640a45bfd2f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files, which is indicative of a link farm or SEO poisoning tactic. One of the primary links, 'https://ttraff.cc/pify?keyword=livre+montessori+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other benign-looking Shopify URLs, suggesting a lure to download content. The ML classifier strongly flagged this PDF as malicious.

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=livre+montessori+pdf
    • http://kutok.theyeyechampionshipleagues.com/uploads/1/3/1/4/131406082/nemimar_wifew.pdf
    • http://files.moskoslawfirm.com/uploads/1/3/1/4/131452842/vunibexidemoxi.pdf
    • http://files.kimwattspsychic.com/uploads/1/3/0/7/130776255/af6184.pdf
    • http://kegoni.imanassociates.org/uploads/1/3/0/9/130969060/898246.pdf
    • https://cdn.shopify.com/s/files/1/0431/9150/0961/files/bahubali_2_all_songs_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0459/9942/3647/files/17139596807.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/aws_codedeploy_cloudformation_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/lippincott_nclex.pdf
    • https://cdn.shopify.com/s/files/1/0465/4222/5566/files/best_stock_android_tablet_2019.pdf
    • https://cdn.shopify.com/s/files/1/0437/9272/8226/files/5th_grade_math_mixed_review_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/6875/0998/files/84026995695.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/lixitemub.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/biomedical_waste_management_in_hospitals.pdf
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/4558800488.pdf
    • https://cdn.shopify.com/s/files/1/0435/1619/9066/files/biostatistics_and_epidemiology.pdf
    • https://cdn.shopify.com/s/files/1/0437/9472/7074/files/82313809804.pdf
    • https://cdn.shopify.com/s/files/1/0432/2607/1199/files/battlefield_4_xbox_one.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/stormie_omartian_libros.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_off00004ae3.bin
32b2ed404b3ad8bf88444bed8b03dbbfcbcb2f1bfc24be834c809b03f13d6181
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE3 4732 bytes
font_01_sfnt_off00005ae0.bin
b539c430b179094d1dcaf2c818209fc6226eb913be22915359650f4a68e5eb91
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE0 10496 bytes
font_02_sfnt_off00007e02.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E02 4324 bytes