Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c48f8e6f2f9654…

MALICIOUS

PDF

57.5 KB Created: 2020-08-18 21:22:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 068f64f8b7099467d3a1994739c2fc99 SHA-1: f61b858e64ae97b785a263ab110667b33a6abe08 SHA-256: f0c48f8e6f2f9654c9d3cec4395727c4ef4091fc8fa2f807d3f01073ce1ce22d
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'Google drive templates brochure'. The primary malicious IOC is the redirector URL, which likely leads to further 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.ru/pify?keyword=google+drive+templates+brochure
    • http://files.foodloveblog.com/uploads/1/3/1/3/131380868/vosirijofa.pdf
    • http://files.relicwinecellars.com/uploads/1/3/1/4/131411474/7359549.pdf
    • http://files.hope.cr/uploads/1/3/1/3/131381706/9337376.pdf
    • https://cdn.shopify.com/s/files/1/0434/1311/0951/files/zefadebezafawotutenokeze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82191842179.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/the_blade_of_the_endless_paths.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/71294384582.pdf
    • https://cdn.shopify.com/s/files/1/0434/8280/8472/files/zofexuvuguzelonafed.pdf
    • https://cdn.shopify.com/s/files/1/0435/4686/9915/files/86397794158.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/48222627880.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdf
    • https://cdn.shopify.com/s/files/1/0432/2761/1295/files/9949994723.pdf
    • https://cdn.shopify.com/s/files/1/0430/6255/8874/files/65342353076.pdf
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/building_healthy_relationships_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/zemabadaxuta.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0796/files/remove_password_from_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/32578622173.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/wakaxevegil.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_off00009310.bin
c228a3ee6fe8585d9ff6a49b76ed32fea2c05d803b16d5ca4e7de4ee3e6c6e07
pdf-font-stream PDF embedded font (sfnt) at offset 0x9310 5496 bytes
font_01_sfnt_off0000a5c5.bin
cbdac41b15ea0f53e4aaae98ae25861e90ebc268e87055cbf25ca432e249d682
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C5 10676 bytes
font_02_sfnt_off0000ca16.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA16 4324 bytes