Malicious PDF — malware analysis report

Static analysis result for SHA-256 d89aaaaa48e1287c…

MALICIOUS

PDF

72.5 KB Created: 2020-08-19 09:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8e4a92c32125962a90efbe05731fd32 SHA-1: b09db4bac10b1596b33624d02ea38313cf399683 SHA-256: d89aaaaa48e1287c3e7a2f185bbc2b44181c8f9edaab16925fdef3ab2ea7cbcf
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to Shopify-hosted PDFs, suggesting an attempt to game search engine results. The document body, though heavily obfuscated, contains a URL that matches the redirector link, reinforcing the malicious intent. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=actaris+sl7000+user+manual+pdf
    • http://files.rwandalawoffice.com/uploads/1/3/1/4/131406945/kidajoxi.pdf
    • http://files.clivechristianfellowship.org/uploads/1/3/1/1/131163559/34728.pdf
    • http://detepiku.theamericanbeaner.com/uploads/1/3/0/7/130776885/8930499.pdf
    • http://files.jumpingjacksgymnastics.com/uploads/1/3/1/8/131857199/venubaku.pdf
    • http://files.bridgingthegapmovementllc.com/uploads/1/3/1/6/131607374/surafiriwiri-jised.pdf
    • https://cdn.shopify.com/s/files/1/0428/7460/1635/files/putet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/38868045577.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/15403034304.pdf
    • https://cdn.shopify.com/s/files/1/0435/9290/8963/files/texugokeroximon.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/82515147750.pdf
    • https://cdn.shopify.com/s/files/1/0461/9170/6263/files/xewetepewemeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/16006925189.pdf
    • https://cdn.shopify.com/s/files/1/0435/7039/7352/files/sixonevajisa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6465/6026/files/25599775948.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_off0000da00.bin
59baba628bbadb3aadd6b7408dbbf0eeeb6a913b3289ec29485c4796155f78b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA00 5512 bytes
font_01_sfnt_off0000eca1.bin
8dbea899c30d3ed7ab824e3284cd725303c1b242756c5329e789235e60377c6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECA1 12184 bytes

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