Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4aa0997776584c3…

MALICIOUS

PDF

41.0 KB Created: 2020-08-27 18:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5858dafa0eabd08cb8885c9b836835eb SHA-1: 5b23c9cd311006e656068c8f970950ae95a949bd SHA-256: d4aa0997776584c3d0ff08375f19ffc9ea8af4e984525abcc3f4e8a2cf552cbb
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 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and references 'Minecraft cathedral schematic', likely serving as a lure. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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=minecraft+cathedral+schematic
    • http://jutev.themanimalchronicles.com/uploads/1/3/1/8/131871991/daxedaga-giwujofona-tamidejan.pdf
    • http://files.all2run.com/uploads/1/3/1/8/131871535/e700c947.pdf
    • http://files.karategma.com/uploads/1/3/1/6/131607310/607dbb114fe7203.pdf
    • http://zafisu.kristofferalbrecht.com/uploads/1/3/0/7/130776699/574ed2.pdf
    • http://files.sterlingstables.com/uploads/1/3/2/7/132710565/wuwepafijojefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/4006/files/bevetelivobo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1444/7519/files/saki_saki_song_video_dj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37638787324.pdf
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/88687304273.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/bornholm_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5664/files/dadibogikorutifizov.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/mugisovofeduwituxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9697/files/31787292975.pdf
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/14611808877.pdf
    • https://cdn.shopify.com/s/files/1/0429/4079/2999/files/asp._net_versus_php.pdf
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/how_to_write_a_newspaper_article_example.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_off000061ce.bin
c6f27407fe28da1f288f8f830d0f62e0f93242cac9f70c5c687b8c5aa3b67aa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CE 5264 bytes
font_01_sfnt_off00007387.bin
d09183fa3dc4c442ba56c16678b35acc03d7a274412eab1c89db1d4721788434		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7387 10384 bytes

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