Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75e84e8516b9b36…

MALICIOUS

PDF

43.3 KB Created: 2020-08-10 05:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fb3f0627a870815fa81ba34e34c41dc SHA-1: d414d3296f3cdeb7c745d0bdfd6d7c6582851dc5 SHA-256: e75e84e8516b9b36328992ea13e50b3adbacd9c8d027c47083aff4e989469ffe
120 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many of which point to benign Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a link farm or redirection tactic to obscure the final malicious destination. The document body, though heavily obfuscated, contains the malicious URL, indicating an attempt to trick the user into clicking it. No scripts were extracted from this sample.

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=ethical+considerations+in+research+pdf
    • http://zureniso.mvkey.org/uploads/1/3/2/7/132710797/2936087.pdf
    • http://tolaputap.hopeconnexion.org/uploads/1/3/1/6/131637136/rikujofag-saxixaluta.pdf
    • http://files.charlesherndon.com/uploads/1/3/1/0/131070356/ae32acd15.pdf
    • https://cdn.shopify.com/s/files/1/0431/8871/5682/files/drone_visuo_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/1101/2770/files/301107940.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/74616917801.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/exercicios_resolvidos_analise_combinatoria.pdf
    • https://cdn.shopify.com/s/files/1/0446/6973/0979/files/cambridge_international_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/wewumizexinoluvobokol.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/ankle_sprain_exercises_kaiser.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7927/files/branches_of_philosophy_of_education.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/binary_codes.pdf
    • https://cdn.shopify.com/s/files/1/0436/9973/2634/files/padedide.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_off00006c19.bin
d18755caabe525572d6a230fc05c0c32e4d62e7e7d21b817d6fc7101cdaf9720		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C19 5200 bytes
font_01_sfnt_off00007dc2.bin
cd12c8cf3570fdfceee277b2eff9ac570e7cc8ad814cdb688874cae7b71debef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC2 10240 bytes

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