Malicious PDF — malware analysis report

Static analysis result for SHA-256 af66016a6a3af59d…

MALICIOUS

PDF

34.4 KB Created: 2020-08-19 03:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a1fa9afda33055ad37345b9d3b8f1a3 SHA-1: c011f929986923f8ac57eee6d2e07a40cc76e705 SHA-256: af66016a6a3af59dfe72c1004f2a612c18fff98558e41749894341b97fcdc8c9
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=kinetic+theory+properties+of+fluids+answers'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. 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.com/pify?keyword=kinetic+theory+properties+of+fluids+answers
    • http://wafirevot.fiveboroughbucketlist.com/uploads/1/3/2/8/132814742/1376973.pdf
    • http://busorupik.jayandersonbass.com/uploads/1/3/1/4/131452883/805174.pdf
    • http://files.nttechnology.net/uploads/1/3/0/9/130969904/juguxaxujaxite-vubozunim.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/22521426512.pdf
    • https://cdn.shopify.com/s/files/1/0436/7591/0294/files/calculus_anton_bivens_davis_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/didevebipuzumasutaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/6127/9896/files/wupagugu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7309/2246/files/takozagetiziwax.pdf
    • https://cdn.shopify.com/s/files/1/0441/0019/0360/files/fidugajig.pdf
    • https://cdn.shopify.com/s/files/1/0431/7836/0987/files/antonin_artaud_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/68432073669.pdf
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/27227509303.pdf
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/28904198204.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_off000049e2.bin
750067477da0136b76692252207338a8d4013c550f9f7005b6a7626bf1461739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E2 5404 bytes
font_01_sfnt_off00005c4d.bin
c2a61d3bb710e5ea137c39d89f5683c22bbc81e6bbfcdb5cc7c712bf07651586		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4D 9556 bytes

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