Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ebdc3fcc936534…

MALICIOUS

PDF

59.4 KB Created: 2020-08-15 03:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb63f4989e533c3a816fa632964c8bc2 SHA-1: 9d2dc9f8e043b682a51eb09016b29e8ea89295fb SHA-256: b6ebdc3fcc936534f3380e6c7e6b9c245c808d2f7012fe83103e59b895336433
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as academic notes. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on cdn.shopify.com. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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/wb?keyword=applied%20science%20diploma%202nd%20sem%20notes%20pdf
    • http://files.birminghammodelyachtclub.com/uploads/1/3/0/9/130968961/49890d448ba7a98.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/ranupafizesabulosemowa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/biopsicologa_pinel.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/momaruwowonadekebomali.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/gakadu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/fofipuvetulixodu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/hindu_temples_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/3117538529.pdf
    • https://cdn.shopify.com/s/files/1/0436/9616/0923/files/aadhar_card_by_fingerprint_software_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/95425738365.pdf
    • https://cdn.shopify.com/s/files/1/0437/7296/9109/files/american_gods_s01e07_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/1403484219.pdf
    • https://cdn.shopify.com/s/files/1/0434/2549/7239/files/72918954020.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d07.bin
cdfb6f4cd55c0db6e612eb86af5ffe8912d85d5d9f3d9e109c5cfb483ade5141		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D07 2264 bytes
font_01_sfnt_off0000772f.bin
60d93c8a4d4c7dcc17db9a02cc6deb8cd8eb769df770f2b4b76e10d592e53d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772F 5112 bytes
font_02_sfnt_off00008872.bin
7826912e856886835f4ee793f5d63dff6922d3efa24490976043c242d1077d2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8872 16248 bytes
font_03_sfnt_off0000baac.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAAC 16060 bytes
font_04_sfnt_off0000cf3f.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3F 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.