Malicious PDF — malware analysis report

Static analysis result for SHA-256 9488628afaf867e3…

MALICIOUS

PDF

49.1 KB Created: 2020-09-01 03:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bb06b606755d46c2642ff2f15973049 SHA-1: f229cbeae90ad293608007ad47e0ef4a19a3c4c3 SHA-256: 9488628afaf867e35cc4b84f9cecba6a718c5952a13567baf5f430cbe3084132
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting a phishing or scam attempt. The presence of multiple embedded links to external PDFs, some hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious 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.ru/wix?keyword=balanceamento+quimico+9+ano+pdf
    • https://cdn.shopify.com/s/files/1/0465/2957/7118/files/2201382216.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0431/5738/9472/files/xeratuzomiveko.pdf
    • https://static.usrfiles.com/ugd/724bd4_e1e745fd81574930a8089b896cdc9eee.pdf
    • https://static.usrfiles.com/ugd/b7ed05_fefff826373d4d1a95efcff53ba817bd.pdf
    • https://static.usrfiles.com/ugd/37428b_72239cc94bd645da9004c7b53e750777.pdf
    • https://static.usrfiles.com/ugd/f4de5e_a238d2cf6fd34012a3a133a8e5ed5fd3.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_4c061df599df475dac7b29b0a117009e.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/c_programming_notes_handwritten.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/sadifenokorajuvadusemow.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/vobagiwan.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_off0000769d.bin
7a4ee20961dd2e653fbf1351be6ac1ae6eebf7bf772b1325a5b91283251503b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769D 5356 bytes
font_01_sfnt_off000088ca.bin
edba26b91aec781237886cd322acfc3a687b0ae4635b05cf88062215b626bea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88CA 15248 bytes

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