Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24945a4983e6a7c…

MALICIOUS

PDF

36.6 KB Created: 2020-09-20 15:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 712886026ca9c4fa2a7e40e6a4ad7a8c SHA-1: a37df231bb922547f255eecaa787f1df2d985b0a SHA-256: a24945a4983e6a7cf184ad0e444ffaef0710d3135eaa1bb7f2eea6ed5554dbf7
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including a critical redirector link to 'ttraff.link'. The document body, though partially corrupted, suggests a lure related to a 'football logo quiz answers' to entice users to click the malicious link. The presence of numerous Shopify-hosted PDF files indicates a link farm strategy, likely for SEO poisoning or to obscure the malicious redirector.

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.link/wix?keyword=football+logo+quiz+answers+level+8
    • https://cdn.shopify.com/s/files/1/0432/4143/9400/files/interim_covenant_reporting_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/craigslist_com_western_ma_free_stuff.pdf
    • https://cdn.shopify.com/s/files/1/0439/8707/5230/files/deconstruction_theory_in_literature.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1781/files/gipojidi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3091/files/gidirotuwokutuguzufawak.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/arcing_fault_in_transformer.pdf
    • https://cdn.shopify.com/s/files/1/0431/5198/2754/files/xanuxizal.pdf
    • https://37d7fe34-3b14-41da-a833-274ea4445ef2.filesusr.com/ugd/b48b60_fb481116b7864e6887e2ab112b33789d.pdf?index=true
    • https://8ab8fe9b-4447-47f1-9037-9db75513740a.filesusr.com/ugd/8127dd_831e592fb9f0417a9c4ef873f4ccee41.pdf?index=true
    • https://301da801-996c-407b-97fc-a82063e7c09c.filesusr.com/ugd/0e9fc2_1cd3cb4dcabd4d8a83bc5ecfcbe30410.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/9372/8158/files/3d_model_maya_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/bonawikunazobuxorap.pdf
    • https://cdn.shopify.com/s/files/1/0486/5327/1208/files/compound_subjects_and_predicates_ppt.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_off00004f75.bin
93f651dbe6d875deac5db5314fcd8d63e471c2a7950b415b56edf0379cf752f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F75 5468 bytes
font_01_sfnt_off0000623b.bin
6b2b7a62911b9b90db2022ff7fc14a1daed5985a5270812a2834444f02d3c0f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623B 10492 bytes

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