Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8eee12dbec4d404…

MALICIOUS

PDF

77.0 KB Created: 2020-07-31 07:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ad1939ae272f142c493dabb112b8799 SHA-1: 183622426f0a92fd409b8d8f1622f7d19c56f2f9 SHA-256: d8eee12dbec4d404b609dc25871291c12a05376604af994ce7a27406fe5873a7
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which points to 'ttraff.cc'. This URL is used to redirect users to other content, in this case, a PDF hosted on Shopify. The document body is heavily obfuscated but contains references to 'The art of war pdf chinese', suggesting a lure. The presence of a PDF link farm heuristic further indicates an attempt to distribute or link to numerous external resources.

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=the+art+of+war+pdf+chinese
    • http://files.thefleckviehguy.com/uploads/1/3/1/1/131163953/letijirapasosarexiv.pdf
    • http://files.allweare.org.uk/uploads/1/3/2/6/132682974/7190179.pdf
    • http://files.northwest-tec.com/uploads/1/3/0/7/130775308/6b149d79ec7.pdf
    • http://files.northwe
    • https://cdn.shopify.com/s/files/1/0437/5271/8494/files/90643663984.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/lapabedeze.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/72367082305.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/xeromot.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/26630857316.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/27886601297.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81143567733.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78299439052.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/95267114858.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/82995886006.pdf
    • https://cdn.shopify.com/s/files/1/0435/4041/4615/files/95877827749.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/22108117273.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3540/files/37060392093.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/65145134882.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd1d.bin
4989f792db8b75b9da88d976a1e0301c8cea7078a7e76efe022d86e3bf830c38
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD1D 15160 bytes
font_01_sfnt_off0000eda7.bin
e8b8aa2793dcef39746d1f596fe600842168868a6f1e7bca591d52a7398efd73
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA7 5040 bytes
font_02_sfnt_off0000fed4.bin
541c151e09bfd882841f1919d509b1bdf374910114a501f42473f6c8f4289338
pdf-font-stream PDF embedded font (sfnt) at offset 0xFED4 12544 bytes