Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f15ff0b4e419072…

MALICIOUS

PDF

43.6 KB Created: 2020-08-30 20:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5841f6bdc3fbbef75688a585b2ed7a0 SHA-1: 2146fa906a3f9489881957711797de7bad268430 SHA-256: 4f15ff0b4e419072fa028ae2d6262007494e20e0089836ea49cbbb6e63b3f4d6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a download for 'Dragon Ball Z ZEQ2'. This link points to ttraff.com, which is flagged as malicious. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of malicious content. The ML classifier strongly indicates maliciousness.

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.com/wix?keyword=dragon+ball+z+zeq2+download
    • https://cdn.shopify.com/s/files/1/0428/2744/8476/files/arifureta_novela_ligera_volumen_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/tesibiliwagoxujomir.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/75435397873.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0f6d74d10bc47bdb90ccbb503061549.pdf
    • https://static.usrfiles.com/ugd/5cf23b_4b6f94da74fd4476af9e8ef67b727e7e.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxepetumikikexozifaxu.pdf
    • https://cdn.shopify.com/s/files/1/0440/0676/8798/files/budget_cuts_vr_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0438/1428/9568/files/census_2020_maldives.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/antigona_furiosa_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0435/9575/9779/files/95456012230.pdf
    • https://static.usrfiles.com/ugd/b8c837_5cdb6847933b43199d51d19747e5f3ae.pdf
    • https://static.usrfiles.com/ugd/5bb01c_68eee5c3e7ea4270a3e65df0af25a55d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f928105e562a4434a0363789bb37d916.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_9e05759879664c068e34c40911f02c49.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_off00006aff.bin
1199219fd4c5188337f371c2298f2a29db14bad4d98eb2ae75b9569402c2653b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFF 5356 bytes
font_01_sfnt_off00007d50.bin
3da73c37110ee1ec8c9c08fabf0dbbe01b6bf0150dae7e3b72bb88bf4eccc9be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D50 10472 bytes

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