Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffdce9500a60b284…

MALICIOUS

PDF

47.7 KB Created: 2020-08-14 06:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac85f62d5a416cf137e4df957d6488bf SHA-1: 5226ff07222614de2d7e9015e34a2ebcd85b3556 SHA-256: ffdce9500a60b28412325abad0e6a3590f1c0d7a130f3295677e5a9cdad55fc9
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with redirectors or unknown content. The primary malicious link, 'https://ttraff.com/pify?keyword=strategic+management+of+technological+innovation+pdf+free', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting a lure to external malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=strategic+management+of+technological+innovation+pdf+free
    • http://dawumom.pandlexpress.com/uploads/1/3/1/6/131637814/tikepon.pdf
    • http://potetaf.pieintheskystjohns.org/uploads/1/3/2/6/132695742/181fcc567f37.pdf
    • http://files.artplak.com/uploads/1/3/1/4/131453062/mixonokofab-wimuri.pdf
    • http://files.getmixedconcrete.co.uk/uploads/1/3/1/3/131379183/makazafeb_fibifo_gagatibolifuver_xilavelenonebog.pdf
    • http://fubarik.kahenyandkaler.com/uploads/1/3/1/3/131379246/aca1e2ff132cb.pdf
    • https://cdn.shopify.com/s/files/1/0434/2248/2582/files/personification_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/8427/4069/files/autre_monde_maxime_chattam_tome_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/international_trade_feenstra_taylor_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/naxiwez.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1542/files/11289829199.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1087/files/xuxeva.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/771356085.pdf
    • https://cdn.shopify.com/s/files/1/0433/4413/4294/files/59739163972.pdf
    • https://cdn.shopify.com/s/files/1/0429/0710/7495/files/who_killed_amanda_palmer_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/zamavujaridexavip.pdf
    • https://cdn.shopify.com/s/files/1/0429/8552/1311/files/gosademuxelolufitoruz.pdf
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/1691091941.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/craftsman_dys_4500.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_off00007c2c.bin
90fc386dc2440b7473bfa49be1fd7b9663bc9cb5f2b14a89b36065c4da2e9090
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2C 5552 bytes
font_01_sfnt_off00008ede.bin
a2e836cc3c780db014fa254af38634310f8c473b62d6524fb64cb0b0e2f7797f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDE 10096 bytes