Malicious PDF — malware analysis report

Static analysis result for SHA-256 e213c307a9714a44…

MALICIOUS

PDF

39.4 KB Created: 2020-08-06 01:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 525e9a30bf7b8ae560c8e9244a4f5ad4 SHA-1: 328fb3d2930297078afd03d887593192a1789022 SHA-256: e213c307a9714a44a1a9cc6062a003b8a0d23876583a910138fd3c836f64b891
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, specifically 'ttraff.cc'. The document body, though heavily obfuscated, includes text related to a 'California rental lease agreement form', suggesting a social engineering lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector. The presence of numerous other PDF links, as indicated by 'PDF_SEO_LINK_FARM', further supports a campaign distributing malicious content.

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=california+rental+lease+agreement+form+pdf
    • http://files.nsrec.com/uploads/1/3/0/9/130970009/tekitikikum.pdf
    • http://birar.wilsonhypnotherapy.com/uploads/1/3/2/6/132682646/zibubif.pdf
    • http://files.goreybypass.com/uploads/1/3/1/6/131636642/a5cc66229cc0c.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/desatexebikaganufi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6818/files/givufilan.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/leboduvijol.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/99891565464.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/46167634276.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/godasepipubavexoxed.pdf
    • https://cdn.shopify.com/s/files/1/0433/3659/7654/files/getezugi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/bokunapabonujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/24928714136.pdf
    • https://cdn.shopify.com/s/files/1/0434/9306/4870/files/mabolisajorutuxijugir.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_off00005d69.bin
3a4defc7fce2f6fb04242419710025b810e7c6a7360c80ca269f84fe4df93aa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D69 5268 bytes
font_01_sfnt_off00006f3c.bin
a7f8ab6e759a3fd3681526f6f49f8195e48d247ce5cd4185931ef76372c0c292		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3C 9912 bytes

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