Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9549910580cd20c…

MALICIOUS

PDF

47.8 KB Created: 2020-08-07 19:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 065f91704b9742158c38529436ebb347 SHA-1: d4c10cdd4782e114005890cb6f7e9ac327600b20 SHA-256: a9549910580cd20c721947da39cf594d834cb83517ba15edc3772405e2636d9c
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=adenite+mesenterica+pdf+tratamento' which is likely intended to lure the user to a malicious site. The presence of numerous Shopify-hosted PDF links suggests a coordinated effort to distribute malicious content.

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=adenite+mesenterica+pdf+tratamento
    • http://files.marytateengels.com/uploads/1/3/1/1/131164033/efc03da58f3a19.pdf
    • http://files.veronicaolivarez.com/uploads/1/3/0/9/130969971/jizekirarudo.pdf
    • http://pukatef.piercingcrossfit.com/uploads/1/3/1/6/131606875/79dd082d79d25e.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/reridigasajosiwedebe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5312/files/72112868322.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3768/files/xebogexo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7398/4919/files/51129191986.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/infinity_times_infinity.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdf
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/jozok.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/3000/files/52778558162.pdf
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/66410199838.pdf
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/sapikijomodusamupaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/kilafowasor.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/mibigenupufonenotekesu.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_off00007c0b.bin
283612eba10fb6860722e5f077114833e69195b68eb3a47f03a7979415dae756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0B 5260 bytes
font_01_sfnt_off00008dd8.bin
c97f9795e88769017e3fab96cdf0ae224e6e899462048da23866fae98e434dcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD8 10552 bytes

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