Malicious PDF — malware analysis report

Static analysis result for SHA-256 24f5ca362dc87b01…

MALICIOUS

PDF

64.7 KB Created: 2020-08-09 01:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b75dec84d88406d608464f8a3d3d30fa SHA-1: b08bc3d28c25657b38a2065c1b0c099ebf6d6292 SHA-256: 24f5ca362dc87b017e2143b908190d2dbe71da9601e972f21fde09f009d1dc26
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the redirector. This suggests a phishing or scam attempt where the user is enticed to click the link, leading them to malicious infrastructure.

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=unicast+routing+protocols+pdf
    • http://files.2878music.com/uploads/1/3/1/8/131857038/9809888.pdf
    • http://files.peakperformanceprep.com/uploads/1/3/0/9/130969879/5680550.pdf
    • http://files.fully-cooked.com/uploads/1/3/1/4/131437655/5f3265bdb.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/rudupadumemokadez.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/87528866240.pdf
    • https://cdn.shopify.com/s/files/1/0437/6772/6232/files/epazote_uso_medicinal.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1029/files/bagewa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9673/4885/files/93856035396.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/85206425253.pdf
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/pemberian_bronkodilator.pdf
    • https://cdn.shopify.com/s/files/1/0431/0764/7639/files/bromus_sterilis.pdf
    • https://cdn.shopify.com/s/files/1/0440/9635/6504/files/14364513583.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/ffmpeg_command_line.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/fevosatul.pdf
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/11236436558.pdf
    • https://cdn.shopify.com/s/files/1/0434/8480/7334/files/topokosurugu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0131/5491/files/xutivesatogavodijuboju.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_off0000c142.bin
26a458d511e4df1b2a3dd8cebbf491dde408ad14fcc33dd53099033597dc2513		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC142 5312 bytes
font_01_sfnt_off0000d362.bin
b50682e30b97da838fc61e284dcc3f07560ba99ac1c9abd72153989ed602ae18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD362 9980 bytes

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