Malicious PDF — malware analysis report

Static analysis result for SHA-256 2146c62bc80009a1…

MALICIOUS

PDF

47.2 KB Created: 2020-08-07 15:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7de502fa2ce8485c04030b703355176 SHA-1: c41d3642d7946291d0a0040e95f9105164efe733 SHA-256: 2146c62bc80009a1f393bf123450cfbbb365b70cce5f37b39d2085cf9eb26360
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=wastewater+treatment+plants+handbook+pdf'. This suggests the document is designed to lure users into clicking malicious links, likely leading to further compromise.

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=wastewater+treatment+plants+handbook+pdf
    • http://files.shop-osp.com/uploads/1/3/1/4/131406861/8f9a7.pdf
    • http://files.alplatocpadmore.com/uploads/1/3/0/8/130873828/tivejetili-setudow.pdf
    • http://files.easccourse.com/uploads/1/3/1/0/131070178/xesitiliri-melafidefuve-mewunetinowul.pdf
    • http://jipoz.correctyourconcrete.com/uploads/1/3/0/7/130738720/6972097.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/desekoxokowigugi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/gewuxux.pdf
    • https://cdn.shopify.com/s/files/1/0440/7204/2661/files/ropodijab.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/bug_bounty_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/19921090529.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/varaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/unearthed_arcana_5e_cleric.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/41452071398.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/sigekemi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/52033570187.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_off00007a09.bin
d27817d5c5c8dea87d582c8854e5134026def11eca020bbc2931cc782de491f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A09 5592 bytes
font_01_sfnt_off00008ced.bin
81486836a686f331c0f9e2f50dad607d0bc8a13f4cc6ce8389efb0d27799762b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CED 9668 bytes

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