Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14f7953005fb2ae…

MALICIOUS

PDF

38.5 KB Created: 2020-08-09 06:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76dba7401daa283909a6b2b61fe8b9cb SHA-1: d0647a71f49fcdb5494f5b34e7bfad5be86b2a2c SHA-256: f14f7953005fb2ae43f3c0083684f52a27b751dcb9cd822a00796fccdfa337e6
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body contains obfuscated text and the malicious URL, reinforcing the intent to redirect users to potentially harmful content.

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=pronoun+antecedent+worksheet+with+answers+pdf
    • http://files.pnwer.org/uploads/1/3/1/4/131406507/bidefogulul.pdf
    • http://kerolewo.puerhbrooklyn.com/uploads/1/3/0/7/130776031/mefovuked.pdf
    • http://files.pop-wuj.org/uploads/1/3/0/8/130813757/tinuxir.pdf
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/jogoto.pdf
    • https://cdn.shopify.com/s/files/1/0454/2873/6168/files/english_business_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3599/0943/files/astronomical_photometry_henden.pdf
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/kokisibifixivirowej.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/46198640653.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/royal_rumble_2006.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/bexujug.pdf
    • https://cdn.shopify.com/s/files/1/0435/1236/5211/files/parigibefirukapekanapabu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0933/4696/files/mipaki.pdf
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/bsava_anesthesia_and_analgesia.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_off000058e5.bin
bafebd8448f541b95c42ef6dfdf5a5757804913baa98df18ebec0a00ef6e1bd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E5 5368 bytes
font_01_sfnt_off00006b38.bin
1067322596b3c5687364bdf346570a6f165474806c755e4368cbb825c4b03964		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B38 9960 bytes

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