Malicious PDF — malware analysis report

Static analysis result for SHA-256 242ee1e19334c91e…

MALICIOUS

PDF

57.9 KB Created: 2020-08-06 01:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cb25b916112bdf180a3b96448fce979 SHA-1: 6220c44c263db6edab3cef0c4a563370e18ba1f7 SHA-256: 242ee1e19334c91ebb71af116912274f0cea1661cd1f96eff4972082e5530436
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or to redirect users to malicious sites. The primary heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.ru/pify?keyword=caracteristicas+sociales+del+adulto+joven+pdf', which is designed to lure users into clicking through to potentially harmful content. The document body, though heavily obfuscated, contains references to the same malicious URL and a large list of Shopify-hosted PDF files, suggesting a coordinated effort to distribute malicious links.

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.ru/pify?keyword=caracteristicas+sociales+del+adulto+joven+pdf
    • http://files.equineunl.com/uploads/1/3/0/7/130739590/6299929.pdf
    • http://files.kayceewarethomas.com/uploads/1/3/1/4/131409170/8518296.pdf
    • http://files.joshuacolecampbellstore.com/uploads/1/3/2/6/132682281/petatek-penora.pdf
    • http://files.p2gbrooklynnorth.com/uploads/1/3/1/4/131408245/ranedamidusiwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/32219670124.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/deridero.pdf
    • https://cdn.shopify.com/s/files/1/0436/3550/7358/files/25771463554.pdf
    • https://cdn.shopify.com/s/files/1/0432/2105/7700/files/70221083984.pdf
    • https://cdn.shopify.com/s/files/1/0437/1070/9913/files/favubunafi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/somasasonagozogekamodo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0184/7708/files/pujefanazegener.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/girulogukojelojejukinozu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7623/6950/files/58896472326.pdf
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/ribapegividupofewezup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80787326618.pdf
    • https://cdn.shopify.com/s/files/1/0435/3851/4071/files/84461081950.pdf
    • https://cdn.shopify.com/s/files/1/0432/9861/9550/files/warogeturorofikewu.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_off0000a103.bin
a565c714a267baf152ad5fa6aab89c3d759551d7cba35bdf9acabfd8959a774f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA103 5188 bytes
font_01_sfnt_off0000b2bf.bin
0f63cfce246deb4c14eddd0b5a8e92adcf0064631587b8803503de9721efd2eb
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2BF 11768 bytes