Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ad64922434280e…

MALICIOUS

PDF

48.3 KB Created: 2020-08-09 22:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4834eee78cde8ed58f84e4567ee72c06 SHA-1: 4468376dea68a2dc993a020cc26d7aba2c30e527 SHA-256: c8ad64922434280e6462b37b1c0a366c47295e231067884f082e92f5e5a739f8
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=name+reactions+of+alcohols+phenols+and+ethers+pdf'. It also exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several other PDF links, suggesting a phishing or redirection attempt. 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=name+reactions+of+alcohols+phenols+and+ethers+pdf
    • http://files.promoteaboveworld.com/uploads/1/3/1/4/131408017/e9a2090ddf7080c.pdf
    • http://bivizipuw.hillcityseniorcenter.org/uploads/1/3/0/9/130969723/xomuloxezaridan-widalupumuvux.pdf
    • http://files.thesportdome.net/uploads/1/3/0/7/130776100/lusabe.pdf
    • http://files.buetradio.com/uploads/1/3/2/6/132695401/1e135.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/wanagezazadi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8203/files/4386544639.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/98684343908.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/mixis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/behold_our_god_piano.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/aac_to_mp3_converter.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/60582644081.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3152232763.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/24913398646.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/39021237701.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwofejimu.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_off00007d08.bin
3dc73778f7d2d9d968f9748f4cc6ad5ccf33d467cc7ba555b7e182e737b68d08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D08 5364 bytes
font_01_sfnt_off00008f1f.bin
ee50509c88a9b9083c061a2740a1af40ffb6ea0d26435873abb6421254c713f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1F 11068 bytes

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