Malicious PDF — malware analysis report

Static analysis result for SHA-256 304516f58d46893c…

MALICIOUS

PDF

87.3 KB Created: 2020-08-15 02:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9baaf02e8f311cdf7a21c345c2a7311 SHA-1: 3c78aff501930a78f437d4f01d337db218a6ead0 SHA-256: 304516f58d46893c3a7ff39d4dc7856e5e6264b195b16d8dfd6ccf3a6b449934
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it links to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, with the primary one being to a redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=dungeoneering+runescape+guide', which is likely intended to trick the user into clicking it. The presence of multiple Shopify URLs, while some are confirmed benign, indicates a pattern of hosting content on such platforms.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=dungeoneering+runescape+guide
    • http://files.mselias.com/uploads/1/3/2/6/132695280/8118290.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/31428363658.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6880/files/kofovorupamuxosexubu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1129/0782/files/30459187582.pdf
    • https://cdn.shopify.com/s/files/1/0428/5785/7187/files/34244730101.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/94480996654.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/89277038206.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/type_1_diabetes_mellitus.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/25868662088.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/cbse_class_11_physical_education_syllabus_pdf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ba3.bin
a599b5f1c2de9c94b5f62082eadeef6e014111c2ef24b27e505d2dfc4c3e4a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA3 5008 bytes
font_01_sfnt_off00011cab.bin
aa08383215af506a7f068b89383b653159febd856248395ad1131c39fa2c1dd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAB 10968 bytes
font_02_sfnt_off0001421d.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1421D 4324 bytes

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