Malicious PDF — malware analysis report

Static analysis result for SHA-256 23e89e6d1d04e51f…

MALICIOUS

PDF

42.5 KB Created: 2020-08-31 01:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc123aeeb9b7db891e04a0d001107c2c SHA-1: a761bc68316140679603b179b7fcf8c33f792f1e SHA-256: 23e89e6d1d04e51f6f62ea918306afbd0dc44633aa07c6853ea49e36b343b059
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/wix?keyword=conan+exiles+crafting+guide+deutsch, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other URLs hosted on Shopify, likely as part of a link farm to improve search engine ranking for 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/wix?keyword=conan+exiles+crafting+guide+deutsch
    • https://cdn.shopify.com/s/files/1/0430/5525/1605/files/super_mario_sunshine_rom.pdf
    • https://cdn.shopify.com/s/files/1/0431/9988/9569/files/35102706509.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/scott_foresman_social_studies_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/kia_cerato_2012_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7668/files/14297140832.pdf
    • https://cdn.shopify.com/s/files/1/0436/9822/5320/files/activated_sludge_system.pdf
    • https://cdn.shopify.com/s/files/1/0428/2613/7756/files/intosai_code_of_ethics_and_auditing_standards.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/terizirutusivezogis.pdf
    • https://cdn.shopify.com/s/files/1/0435/0358/3384/files/40008746150.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/variedad_de_cafe_costa_rica_95.pdf
    • https://cdn.shopify.com/s/files/1/0439/2045/7883/files/quick_memo_plus.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7650/files/62625865916.pdf
    • https://static.usrfiles.com/ugd/b8c837_b807141955ef4b10b45a1f6f3750c3ad.pdf
    • https://static.usrfiles.com/ugd/10b11f_aa7019d7b6284cee94f09a4ef9a4da53.pdf
    • https://static.usrfiles.com/ugd/b8c837_fafa41c826854254940890c10bed8360.pdf
    • https://static.usrfiles.com/ugd/67f5f7_6c80e2956b3e45258187bcc1c82cda72.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_off00006056.bin
92b40cb714e5a5c8b83c08219754b89d1c4768cfa59a8d5aa96e785c8a2a7830
pdf-font-stream PDF embedded font (sfnt) at offset 0x6056 5256 bytes
font_01_sfnt_off00007229.bin
8a5bdf2d5cd7d39bd49838f00ec3a658a8cdebc2727d289cdf41fa994689ea7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7229 13560 bytes