Malicious PDF — malware analysis report

Static analysis result for SHA-256 510764b963c4bbb2…

MALICIOUS

PDF

39.3 KB Created: 2020-08-18 20:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3af5e67b3aa82abcb0fb06cee0c6817d SHA-1: 637c1f5f8582e7e88a9845c6ab96675a78f22189 SHA-256: 510764b963c4bbb21d1a91e92cf57d07cf233ee9138b10bee25ed6af60015e64
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=outlook+google+calendar+sync'. This URL is presented within the document body, disguised as a legitimate link related to calendar synchronization. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or redirection strategy. 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=outlook+google+calendar+sync
    • http://dukan.spartacalvarychurch.com/uploads/1/3/2/8/132814930/sozibodiroju.pdf
    • http://daliloka.sixeightapparel.com/uploads/1/3/1/4/131408849/likedagepeb.pdf
    • http://gaxegij.julianjrobinson.com/uploads/1/3/1/4/131483144/zomonotokutiwumilu.pdf
    • http://files.turtlewoodfarm.com/uploads/1/3/0/7/130739039/9104883.pdf
    • http://devun.killianhsmusic.com/uploads/1/3/2/7/132740720/pajexuxuruvifeg.pdf
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/11693215321.pdf
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/birthday_gift_certificate_template_word_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/75523885865.pdf
    • https://cdn.shopify.com/s/files/1/0439/0433/6040/files/critical_participatory_action_research.pdf
    • https://cdn.shopify.com/s/files/1/0434/3444/2919/files/lagu_sendiri_lagi_chrisye.pdf
    • https://cdn.shopify.com/s/files/1/0437/0438/5686/files/b._s._shah_prakashan_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7909/files/84083813426.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/xudamel.pdf
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/312_967_0585.pdf
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/sofifevufenesagagafowum.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/non_essential_amino_acids.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_off00005d18.bin
e4337f7ba73c0001da819dcb7579661021ca812704f5ed7d7b63bc54b5bb2d18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D18 5300 bytes
font_01_sfnt_off00006f37.bin
a3bc783eec290e27bafa601d3ffc4f4b5c73cc8cc71a5b3e978cc21a882aa038		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F37 9724 bytes

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