Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48a85eee1178ad7…

MALICIOUS

PDF

38.8 KB Created: 2020-08-23 18:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40d824a3b6f9dc0e7b601babd2a4c203 SHA-1: 2c19469cc63331452517dc27578aa44ca1f229bd SHA-256: c48a85eee1178ad7fa70befa51adc96a72337a5393899baaca2d35500048264d
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body text and embedded URLs suggest a lure related to a 'cbre report thailand'. The primary malicious URL is https://ttraff.cc/pify?keyword=cbre+report+thailand, which likely serves as a gateway to further malicious content. No scripts were extracted from this sample.

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=cbre+report+thailand
    • http://gusimoriw.midwesthomebuilding.com/uploads/1/3/1/3/131381497/nizifawo.pdf
    • http://files.charlie-myers.com/uploads/1/3/2/7/132741169/c573e2.pdf
    • http://files.purogato.org/uploads/1/3/1/8/131871921/sixizigunarig-fewonetedivasux.pdf
    • http://files.harrydolan.com/uploads/1/3/0/8/130814785/powufu-nuregex.pdf
    • https://cdn.shopify.com/s/files/1/0450/9194/6661/files/string_concatenation_c.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/80428833075.pdf
    • https://cdn.shopify.com/s/files/1/0436/3629/3785/files/ascanio_condivi.pdf
    • https://cdn.shopify.com/s/files/1/0459/7311/0951/files/best_cordless_telephone_with_answering_machine.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/cbse_11th_biology_textbook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/65701557565.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/fazasodivozufef.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/fibivesalimenene.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6746/files/nokosarelupadu.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_off00005ba5.bin
218f40d06e0bc8611b9195a5f0b2eb50412f0e5af0dba6fdb133017648a96cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA5 4916 bytes
font_01_sfnt_off00006c3d.bin
54e7c110a71331099db920f7263eda5467fea03f7116f201012b3cf4736696d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3D 10208 bytes

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