Malicious PDF — malware analysis report

Static analysis result for SHA-256 8378736f92f64559…

MALICIOUS

PDF

54.2 KB Created: 2020-08-06 18:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2542435b3512b2db08fb287a33efcf3 SHA-1: 46fb005e049d84e38369892c0fe34a1eb0ec0ccc SHA-256: 8378736f92f64559fe719aff4b0933101a39bd4bce2eb2527f6d09582bba87f3
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a mass of external links, suggesting a link farm or SEO poisoning attempt. The ML_NYX_PDF_MALICIOUS classifier strongly indicates malicious intent. The primary attack vector appears to be a lure to a malicious redirector.

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.cc/pify?keyword=computer+graphics+animation+programs+in+c+language+with+output+pdf
    • http://files.roccroyaloak.com/uploads/1/3/1/1/131163902/fapadi.pdf
    • http://sedelufuk.intermenno.net/uploads/1/3/1/4/131437423/b871ab39c3154.pdf
    • http://files.melaningracecosmetics.com/uploads/1/3/0/8/130813511/7906863.pdf
    • https://cdn.shopify.com/s/files/1/0433/6418/8312/files/72512212171.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/gomedujen.pdf
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/milenese.pdf
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/virtual_dj_7.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/22561256477.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/seti_ui_sublime.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/92291349821.pdf
    • https://cdn.shopify.com/s/files/1/0430/1350/5185/files/fisazifuzazavizada.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/pujaditiburi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4364/2792/files/biblia_catolica_para_jovenes_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/66100061453.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_off00007537.bin
907b769cff64528d0b5a91bcd996a2038377ce6c3d31c772435fb2cc8fbde7a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7537 5564 bytes
font_01_sfnt_off00008814.bin
623a5c178cdc354e0c4887b8e9ee6763921044f16ca10dd0c10c21569c3b2daf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8814 15592 bytes
font_02_sfnt_off0000ba21.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA21 4324 bytes

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