Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce57be944ec3e01c…

MALICIOUS

PDF

40.8 KB Created: 2020-07-31 16:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a3866ffffad33938d68be8d6ed28c03 SHA-1: 6909b3f0a68abae0fcfb739e36d565bc075e5437 SHA-256: ce57be944ec3e01ce0d07a4e87fe7fbcc436837eac85d12c142643dfc2cad352
120 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'chinese dirt bike parts' and the malicious URL. This suggests a lure to a phishing or malware distribution site. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or to obscure the final malicious destination.

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=chinese+dirt+bike+parts
    • http://files.mikewmorgan.com/uploads/1/3/0/7/130776054/4831202.pdf
    • http://files.shoppureblossom.com/uploads/1/3/1/8/131857193/451ac67ac2287.pdf
    • http://files.cindylauriephillips.com/uploads/1/3/0/8/130874250/kokemilokem-meguvuwimetu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/84665960128.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/78684911927.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/59280523300.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/89696536690.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/dagexinunowejobolewafav.pdf
    • https://cdn.shopify.com/s/files/1/0438/2723/2918/files/rifij.pdf
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/29491729163.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/fujovisaxidamofazokazux.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/sewefeloluguf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62856854762.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/42957078354.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6135/files/pufisuxinawitilotiwuzu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6935/7728/files/44105346874.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_off000062b0.bin
9e0a25fa8b0db49087d3ce410a72a53e67ffd2a5f646713e8ac6ee1bcdbb39f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B0 5124 bytes
font_01_sfnt_off00007401.bin
7e719ec21e0c34fb0b565e16cb30bb3ae10541fa85ff347c825a48062accd81d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7401 10040 bytes

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