Malicious PDF — malware analysis report

Static analysis result for SHA-256 554ea53c0e9b5a6d…

MALICIOUS

PDF

39.3 KB Created: 2020-08-03 17:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ee563a25f24590c97c0baa7541035af SHA-1: 66316f51ade4d4c0609611e4515a4f30cb4ebeff SHA-256: 554ea53c0e9b5a6def6d8081180616c13dc765f270fa6c3bd6541779f6eb6b2d
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at `https://ttraff.ru/pify?keyword=binging+with+babish+cookbook+pdf+download`. This suggests a phishing or SEO poisoning attack, aiming to redirect users to malicious sites under the guise of providing a downloadable cookbook. No scripts were extracted, and the document body is heavily obfuscated.

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/pify?keyword=binging+with+babish+cookbook+pdf+download
    • http://files.archtopukuleles.com/uploads/1/3/1/6/131606348/3434808.pdf
    • http://files.defineandfree.com/uploads/1/3/1/3/131379110/7745090.pdf
    • http://files.creative-twinkles.com/uploads/1/3/0/9/130970022/9646657.pdf
    • http://files.bobbiluphotography.com/uploads/1/3/1/4/131453943/tulimebabi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0433/4937/7177/files/27877719446.pdf
    • https://cdn.shopify.com/s/files/1/0432/7414/1864/files/fisher_paykel_washer_parts.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/15512195887.pdf
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/81602931300.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/22906086260.pdf
    • https://cdn.shopify.com/s/files/1/0429/5688/2086/files/romironumopazebo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/89568400338.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/simetef.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/34861407780.pdf
    • https://cdn.shopify.com/s/files/1/0438/2123/6386/files/minecraft_birthday_cakes_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0430/4198/0567/files/xujugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/40485132532.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_off000059dc.bin
75fb3e8871d886be1490e6410357921e31ddc11be57f3bbf6b56dfa61ec2466e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59DC 5668 bytes
font_01_sfnt_off00006d39.bin
c85099bfe3dcd45ebe2f81edc9f167e2bed565b4ec1a4d00f3f2bf5632be5b38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 10252 bytes

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