Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb3e88a6ade46505…

MALICIOUS

PDF

41.0 KB Created: 2020-09-06 08:07:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02b89b8949bd288616f15942cfc1f2c3 SHA-1: 5606b1bf2833ffbba6f663e3363d3a2001eed729 SHA-256: cb3e88a6ade46505e48c69ad5e4c968e182ce170608f328ae32272acd7661393
150 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, forming a link farm. The primary URL, 'https://ttraff.com/wix?keyword=kinobody+superhero+bulking+program+pdf+free', is identified as a malicious redirector. This suggests the document's purpose is to lure users through a chain of redirects, likely leading to a phishing page or malware download. No scripts were extracted from this sample.

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/wix?keyword=kinobody+superhero+bulking+program+pdf+free
    • https://static.usrfiles.com/ugd/bc0b97_7f3912b4dd224a85853651b17544b29a.pdf
    • https://static.usrfiles.com/ugd/270e53_d0f96c495f734eafa3e4b6e2e6fb2eee.pdf
    • https://static.usrfiles.com/ugd/a86d68_a585049649f14727b19cfe1d0c769cab.pdf
    • https://static.usrfiles.com/ugd/e745be_3e4f433bd4b64a14af94b0ee64dae721.pdf
    • https://static.usrfiles.com/ugd/b8c837_28815b5cef2c48d18acf3eb780d8372a.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/absorption_costing_questions.pdf
    • https://cdn.shopify.com/s/files/1/0435/2786/4471/files/86766709810.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4691/files/84482702930.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_1bec14336c074b29a41417f740d6a5ec.pdf
    • https://static.usrfiles.com/ugd/e3c460_facf062554e8476d9d3a7bbed1bb2738.pdf
    • https://static.usrfiles.com/ugd/1decf9_cec8cf8d5eef42c7b0ded87b291ac37c.pdf
    • https://cdn.shopify.com/s/files/1/0435/2930/6272/files/santali_bible_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/77814528015.pdf
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/bluestacks_new_version_2018.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/42662078643.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_off0000615f.bin
51917b162d57d20a46cf3dbc46c8874abf4016c1f62e861d80db0251a6180f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615F 5728 bytes
font_01_sfnt_off000074b2.bin
4b75df292d07b0c44dc7ad77068fb214771a85a6fd3ef2713ce0410a64a825aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B2 10112 bytes

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