Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab2549bd25132869…

MALICIOUS

PDF

32.6 KB Created: 2020-11-01 18:31:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 996a46383e18dd94631eae03d927ad70 SHA-1: 063e425625156a54f42c37184a8169e7009ba3c8 SHA-256: ab2549bd25132869f2fd4669404405cdd9c38611a000ef0e3328625613238057
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure for a free game, likely intended to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 2

  • 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.
  • 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://cctraff.ru/aws?keyword=bowman+2+free+game
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f8e6d9f0095d.pdf
    • https://cdn-cms.f-static.net/uploads/4421213/normal_5f9cd5a3baa3f.pdf
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5f89ac6482b08.pdf
    • https://cdn-cms.f-static.net/uploads/4408589/normal_5f932926e73f9.pdf
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f8cfb219605d.pdf
    • https://cdn-cms.f-static.net/uploads/4409250/normal_5f98ec2cad825.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0499/3656/4375/files/patotixuzumabalibepi.pdf
    • https://uploads.strikinglycdn.com/files/ab3d04b3-c1e4-4e04-9774-d9681f473482/ecology_quiz_worksheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/lemorojowuxixakisawupuj.pdf
    • https://uploads.strikinglycdn.com/files/c4056e65-a5d3-4503-89e4-fe88127aa788/forem.pdf
    • https://cdn.shopify.com/s/files/1/0501/7174/0320/files/22271531779.pdf
    • https://uploads.strikinglycdn.com/files/217d1f44-f80f-449b-a7c6-025c0fe17bb8/15342130922.pdf
    • https://cdn.shopify.com/s/files/1/0501/4106/9505/files/79519280621.pdf
    • https://cdn.shopify.com/s/files/1/0498/4202/8706/files/rapofanatadamusidebabi.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062a8.bin
3513648c3522c1833821bf3aac342c846cc4b643c91956ff1d37799d7e2aaa00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A8 5148 bytes

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