Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ceb4ebcbcacafb…

MALICIOUS

PDF

38.5 KB Created: 2020-08-28 04:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: add1dd398b031956c23dbc5198457cb6 SHA-1: 19bf3891382657d88309d9282daf322da043967e SHA-256: c2ceb4ebcbcacafb3b3c779baf8b973b9398490904a9c5d9ffa2106f7d371b0e
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. One of the primary embedded URLs, 'https://ttraff.cc/pify?keyword=goaliath+54%252527%252527+gotek+portable+basketball', is identified as a malicious redirector. The document body contains garbled text but also includes this URL and other PDF links, reinforcing the link farm and redirection attack pattern.

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.cc/pify?keyword=goaliath+54%252527%252527+gotek+portable+basketball
    • http://files.xnrracing.com/uploads/1/3/1/6/131636642/lapewatugibalimevoto.pdf
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/gay_bar_playa_del_carmen.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/vcd_cutter_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/sikajifupoxixedizudunovix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/buvivalixafufenomixuveru.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/how_to_see_archived_messages_on_messenger.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/68818235425.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/zabamiseligepof.pdf
    • https://cdn.shopify.com/s/files/1/0430/5856/1175/files/geerhardus_vos.pdf
    • https://cdn.shopify.com/s/files/1/0435/0800/7072/files/85301912344.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/disonamugibenisoli.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/zebubedur.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/samugujegedaxebujak.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_off000054dc.bin
2ef692d62d00a560f1828d981828997f46628a3cfbf72fcb8c3c11ddcf07615c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54DC 5564 bytes
font_01_sfnt_off000067d7.bin
e5791c5e283b81227a454a31e7c8862728925336654affb29c922772f3cde773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D7 11112 bytes

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