Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d47cc9a5fdd8f75…

MALICIOUS

PDF

53.1 KB Created: 2020-08-15 12:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03d785a8a08568a3d295549ede0f101c SHA-1: cba3cae70ab79d955f7a4d1b6d0d48367feab7ed SHA-256: 7d47cc9a5fdd8f75eacdebe0de115b0a613a9c068b8fda0b58b5ed76c5a2b70c
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes the target URL and keywords suggesting a lure for users searching for specific content. The presence of a link farm heuristic further indicates a malicious intent to drive traffic to external sites.

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.ru/wb?keyword=hypnosis%20techniques%20in%20urdu%20pdf
    • http://vipik.nirvanaeventlighting.com/uploads/1/3/1/8/131856158/017bf00.pdf
    • http://files.nayadaya.com/uploads/1/3/0/7/130739718/2f25a07b8b.pdf
    • http://files.chrisspaight.com/uploads/1/3/2/3/132303238/padeva.pdf
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/satijixomifak.pdf
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/oxford_english_to_french_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/46382348323.pdf
    • https://cdn.shopify.com/s/files/1/0431/2783/2733/files/19236432099.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/pukalola.pdf
    • https://cdn.shopify.com/s/files/1/0431/1770/7413/files/building_construction_rangwala_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7404/3556/files/javascript_remove_commas_from_string.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fbc.bin
5079c64a5b143c662d6498495f25a5955a6e62744da2cd0ea1083e001913d3f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBC 5072 bytes
font_01_sfnt_off000080f1.bin
2f3183187f56a8b45084a81cec95c6e7c4223421db74c9759fe2b991ac31d218		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 10380 bytes
font_02_sfnt_off0000a4ab.bin
2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4AB 16060 bytes
font_03_sfnt_off0000b942.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB942 4324 bytes

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