Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea035a314821582…

MALICIOUS

PDF

63.4 KB Created: 2020-08-10 00:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 043ffc23babfdff85bdb0c283aa4eec9 SHA-1: 84521097adfa3c23c622ed9874ac5763620c1f1e SHA-256: dea035a31482158208a50ee0299023bcf02a0068a7221f059e92e1478ae6bcd1
150 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=blow+molding+machine+pdf', which is likely intended to lead the user to a malicious site. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO-based link farms used for traffic redirection.

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=blow+molding+machine+pdf
    • http://files.graceub.com/uploads/1/3/2/6/132681404/6733747.pdf
    • http://files.njoylifecoaching.com/uploads/1/3/1/3/131381555/2c591eacf936e.pdf
    • http://gazite.smallwonderskennel.com/uploads/1/3/0/7/130775045/4915b.pdf
    • http://files.norfolkwestridgeumc.org/uploads/1/3/0/7/130775228/mevuwez.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/97574661149.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/topographical_anatomy_of_man.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2556/files/5252822765.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mubexuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/lekuxude.pdf
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/69526952220.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6819160869.pdf
    • https://cdn.shopify.com/s/files/1/0430/9994/7169/files/14400972240.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/95361636822.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/powigatafulijizotexufe.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_off0000bb4e.bin
539a7e254e06cd49afacc5ee58a3408c44276a849fda290c294ba9a868384cec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB4E 5436 bytes
font_01_sfnt_off0000cdc2.bin
b97f8d050e74f063fc169fb3beee59dc16cc04a1ffebb00a8cf598ea3168e5fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC2 10208 bytes

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