Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccdac8b9ec704789…

MALICIOUS

PDF

43.4 KB Created: 2020-08-09 10:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd0bf37867c71fc317954b0805afbc30 SHA-1: 0054c9db2da9a81efeb9c0ad406f584353abd9f3 SHA-256: ccdac8b9ec7047890f5787663818c648fedf152b8d9fe56fa96a08c088e27e08
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link farm and a malicious redirector. The primary malicious URL identified is ttraff.com, which is used to redirect to other URLs, including a Shopify-hosted PDF. This suggests a phishing or malicious content delivery scheme, likely aiming to lure users to malicious sites through a chain of redirects.

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=apoptosis+quiz+pdf
    • http://files.capitalchallenge.org/uploads/1/3/1/0/131070590/kutaf.pdf
    • http://files.mrsdesantis.com/uploads/1/3/1/6/131607440/robowam.pdf
    • http://files.vrbeforeitstoolate.org/uploads/1/3/2/8/132814146/15036894e.pdf
    • http://files.elisafriedlander.com/uploads/1/3/0/7/130775970/3087793.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/27808907748.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/rixinelitusasofuna.pdf
    • https://cdn.shopify.com/s/files/1/0446/6815/8105/files/duwebamewimunobawezav.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/lalumewuvowujatuzo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/d_d_artificer_5e.pdf
    • https://cdn.shopify.com/s/files/1/0439/8658/3710/files/43482526586.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8711/files/ata_guidelines_thyroid_nodules.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/46833275914.pdf
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/britax_car_seat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2417/8600/files/paxox.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0023/files/christian_worship_songs_chords.pdf
    • https://cdn.shopify.com/s/files/1/0435/0581/1608/files/wisuxugejagekuwow.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_off00006cc0.bin
db53fdc16dcacfe0ce3ed9376b41d5d250ef15672c99979b25b25757036536b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC0 4864 bytes
font_01_sfnt_off00007d6e.bin
ede0b4c3bb452028440434ea71f1a21e1ea5a8f5f31292a203d42db38cdcbb7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6E 10420 bytes

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