Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f260beaedb0dea…

MALICIOUS

PDF

34.7 KB Created: 2020-11-02 20:23:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74e8df27cac0f0d54f83fbd6a644c53c SHA-1: 02563c4e02969024def8a06a24123fe2dcc9ace1 SHA-256: 12f260beaedb0dea96e8b0d3ba9e60986a326cb947bd9b5ba9a958527022db1f
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least two identified as malicious redirectors. One link points to 'cctraff.ru', a known malicious redirector, and another to a Weebly-hosted PDF. The document body, though heavily obfuscated, contains these URLs, suggesting an attempt to lure the user to malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/strik?keyword=cast+umbrella+academy+number+5
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/1817f.pdf
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kadijamiruvinugeno.pdf
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f87f5251588c.pdf
    • https://belonimilulufaf.weebly.com/uploads/1/3/4/4/134403367/jinuzalazusemo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0496/1353/7429/files/conservation_of_energy_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0484/2435/3960/files/jifezido.pdf
    • https://s3.amazonaws.com/bejideba/eddie_vedder_into_the_wild_lyrics.pdf
    • https://s3.amazonaws.com/wonoti/zudawabatoralar.pdf
    • https://s3.amazonaws.com/piwanisaj/53776225654.pdf
    • https://cdn.shopify.com/s/files/1/0483/2319/9140/files/geometric_probability_worksheet_answers.pdf
    • https://s3.amazonaws.com/xanebavifamopez/iskcon_bhagavad_gita_download.pdf
    • https://cdn.shopify.com/s/files/1/0476/6892/0486/files/25107522726.pdf
    • https://cdn.shopify.com/s/files/1/0266/9094/5215/files/22889961942.pdf
    • https://s3.amazonaws.com/felijaziremole/82738502317.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ea2.bin
e50a1b7c103404afa94612b287ab2cf3b7cf32e549982c2cd8e3e27603a1ecbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA2 5356 bytes

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