Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeca1b95dbd445c1…

MALICIOUS

PDF

41.2 KB Created: 2020-08-11 12:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 484c2d502d0e6d18f67ac230bc219db4 SHA-1: e79a319a54e6ed39542025c03abc3a1d23188787 SHA-256: eeca1b95dbd445c196ea0576ff39ee9babfcbb9db43c44a9e539340cccd6e7cc
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=resize+pdf+mac+online', suggesting a lure to a fake online tool. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content or redirect users. No scripts were extracted from this sample.

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/pify?keyword=resize+pdf+mac+online
    • http://getak.thedojoparamus.com/uploads/1/3/1/6/131637030/9e75d9760858.pdf
    • http://files.northeastohiodukes.net/uploads/1/3/1/0/131070313/d6930e946a9d3e.pdf
    • http://files.bluecarpetcorridor.org/uploads/1/3/1/4/131452935/9190080.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2067/files/gavalemabisufaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/63437806081.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/povajomumiraligaribemagin.pdf
    • https://cdn.shopify.com/s/files/1/0431/0355/1645/files/98096190966.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jerozex.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/79992734076.pdf
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/nemafijiresobavakufamuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/2545/7575/files/widadolij.pdf
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/zerixu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7279/8373/files/sukitamero.pdf
    • https://cdn.shopify.com/s/files/1/0438/2123/6381/files/52499216281.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/47837556895.pdf
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/wozejax.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/
    • https://cdn.shopify.com/s/files/1/0

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062bd.bin
908509bc9a5c66ebb88710b43ba141380df7ed673a0989794bcfc0e0b57c4e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BD 5260 bytes
font_01_sfnt_off00007499.bin
68b8b772d2a68a294cc33684cadc46df5b1b61d344f3b3ec87e552e6416075d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7499 10312 bytes

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