Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae266e53c72876af…

MALICIOUS

PDF

41.2 KB Created: 2020-08-24 16:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0538da66a6fa7daac2caf04d9f0540be SHA-1: 80c563120d0b11df4f259ff8ba7cb6c35663c828 SHA-256: ae266e53c72876afa50eb6808e1af3591fe3590bd0b84fc386c2b464c76bb0bc
150 Risk Score

Malware Insights

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

The PDF contains a deceptive title "Cm ruler actual size pdf" and a mass of external links, many pointing to Shopify domains, designed to appear legitimate. One of these links, https://ttraff.cc/pify?keyword=cm+ruler+actual+size+pdf, is identified as a malicious redirector, indicating the document's purpose is to lead users to harmful content. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=cm+ruler+actual+size+pdf
    • http://files.katherinemarieprice.com/uploads/1/3/2/8/132814906/7888902.pdf
    • http://files.crookcocattlewomen.com/uploads/1/3/2/3/132302995/2892526.pdf
    • http://files.artdwellers.com/uploads/1/3/0/7/130739544/noruxenibutevuber.pdf
    • http://lizofopa.hoveyeyres.com/uploads/1/3/2/8/132814930/f7d53325214.pdf
    • http://bolep.stauntondistrictumc.org/uploads/1/3/0/7/130740025/jififoma_metusuge_nanegupuzuve_muxavid.pdf
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/96978157505.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/zemovefinijezawarake.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/kogezezanonumip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/68324339898.pdf
    • https://cdn.shopify.com/s/files/1/0436/6044/3813/files/89428764086.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/26131010724.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/7996/files/46204199757.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/futilonulujemutegikoguv.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/95055383916.pdf
    • https://cdn.shopify.com/s/files/1/0433/9725/1235/files/3145994247.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_off00006110.bin
3375d2b1bfc242494837a891eef452748a52fab0230d35157cc230e24f70ec00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6110 5256 bytes
font_01_sfnt_off000072db.bin
2de6ec03e7f0cfe4d74ffb8efb76b34bc15398bf234f54d234d8aa6ef5d9eef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DB 10908 bytes

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