Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc0d563a9e0ba2e…

MALICIOUS

PDF

42.9 KB Created: 2020-08-15 06:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5547789a5fe9b16f37f31428310ba084 SHA-1: 23af7518ab18199f3cc9cb8b0fe08f851789484e SHA-256: 1cc0d563a9e0ba2ecd50d52ff18702bc75c39825b0e5328c8d43385ed2c44b45
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.com/pify?keyword=neumonia+por+chlamydia+trachomatis+en+pediatria+pdf. The document body, though heavily obfuscated, contains this URL and other links pointing to various PDF files hosted on Shopify. This indicates a social engineering tactic to lure users into downloading or accessing potentially harmful content.

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/pify?keyword=neumonia+por+chlamydia+trachomatis+en+pediatria+pdf
    • http://guwemimef.megadryforce.com/uploads/1/3/0/8/130874284/werimu-sawujasit-kuguzosagejixe-fujusurivava.pdf
    • http://files.lindavanderheyden.com/uploads/1/3/1/3/131398457/8bdafe.pdf
    • http://gelejob.ricotroostphotography.com/uploads/1/3/1/4/131408008/c00d4f1a9db39.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/30964047644.pdf
    • https://cdn.shopify.com/s/files/1/0437/1808/2709/files/mevimunavekadibul.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/sexebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1079/files/blank_sheet_music_for_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0445/2705/9103/files/wanimodupogufawapap.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/dabelazuwiwalo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9488/2984/files/peter_lynch_beating_the_street_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/datupelorugalawemud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/93358056514.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/45932307513.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_off000069f3.bin
cafbdc6309a5eff6ac54e8799e56d0feef2e34ec9a6c632058e549d0b656b1ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F3 5464 bytes
font_01_sfnt_off00007c65.bin
db0cce4db38cb9af23b50163e59a6af95c3fbdb12f6b62e1d74b9359e3412562		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C65 10124 bytes

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