Malicious PDF — malware analysis report

Static analysis result for SHA-256 562b1b3d8fdc5d6c…

MALICIOUS

PDF

45.9 KB Created: 2020-08-20 22:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b347aaa4490c87157418dfae35ad7b32 SHA-1: 7e9b1b6057da3faa8374264fdc7e4a6145a3910b SHA-256: 562b1b3d8fdc5d6c84f9488d01106de1cf4611feb8b66679b6f35bd3182de34e
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=flight+radar+24+apk+old+version', suggesting a lure to download potentially malicious software. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=flight+radar+24+apk+old+version
    • http://files.joselinehardrick.com/uploads/1/3/1/8/131856433/6965939.pdf
    • http://files.horseandriderconnection.org/uploads/1/3/1/6/131637773/7454587.pdf
    • http://files.summasportswear.com/uploads/1/3/1/4/131453807/118d8e22a22790b.pdf
    • http://roreduj.fwgreenandblue.com/uploads/1/3/0/7/130738993/bdf22d8f.pdf
    • http://difiv.sparkd.shop/uploads/1/3/1/4/131453870/d6bb4b7a.pdf
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/grade_6_math_worksheets_problem_solving.pdf
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/system_rescue_cd.pdf
    • https://cdn.shopify.com/s/files/1/0435/9333/4947/files/wuwomorirewolu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/customs_clearance_procedures.pdf
    • https://cdn.shopify.com/s/files/1/0435/4388/8023/files/galvanometer_construction_and_working.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/38792197782.pdf
    • https://cdn.shopify.com/s/files/1/0433/7749/2118/files/detoxification_of_xenobiotics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90841244024.pdf
    • https://cdn.shopify.com/s/files/1/0439/7039/6318/files/bradley_smoker_bisquette_guide.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000549f.bin
130024d70ed325f30a24f3e50a57fa590cb937563f63fbd0810226e91c05cb47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x549F 5520 bytes
font_01_sfnt_off00006763.bin
15bfc82587f0f4f1b342e4189d33951f25276c122016ba9465afd2d62c1cbbba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6763 2288 bytes
font_02_sfnt_off000071a3.bin
1c118f1bf2e699255017b55a19ac3a918e8646fc626fd06fe50c12ea1eef87e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A3 10404 bytes
font_03_sfnt_off000094b7.bin
a6aff6a43d3cce4813d40d03e08483c84c65b4cc4faa8b4587d3e6d21e8e8151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B7 16184 bytes

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