Malicious PDF — malware analysis report

Static analysis result for SHA-256 b419e664ec106f6b…

MALICIOUS

PDF

42.0 KB Created: 2020-09-03 00:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79af64c0eda4d6b34a9cbd6c073bd15f SHA-1: 5a1564c32948181d2329354674752cee30e753ee SHA-256: b419e664ec106f6b019f2c572ffc264b32516cd74ee00068703dbec8a8cfdf79
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a malicious redirector link. It also contains a large number of external links, characteristic of a link farm used to distribute malicious content. The primary malicious URL identified is https://ttraff.club/pify?keyword=alala+kanda+song, which is likely used to redirect users to a harmful destination. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

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.club/pify?keyword=alala+kanda+song
    • https://static.usrfiles.com/ugd/e1d12c_7a5cb77947334f2783dcf78ee88d65f7.pdf
    • https://static.usrfiles.com/ugd/ab63e3_257507af36d14bed8966c1c2e475b868.pdf
    • https://static.usrfiles.com/ugd/911c12_f9b5210520d8452f8af5b7546354000c.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/11701835433.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5309/files/31207656582.pdf
    • https://cdn.shopify.com/s/files/1/0438/4840/1046/files/acromegalia_y_diabetes.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4266/files/11680176455.pdf
    • https://cdn.shopify.com/s/files/1/0433/4157/8399/files/advanced_vocabulary_in_use.pdf
    • https://static.usrfiles.com/ugd/0789d5_a484f5e40aab481893dad37062cc2cdb.pdf
    • https://static.usrfiles.com/ugd/a01749_a01feee9799746ca80409f35db4b3f43.pdf
    • https://static.usrfiles.com/ugd/b8c837_4890071b2bbf4314940612ace5b2b058.pdf
    • https://static.usrfiles.com/ugd/b8c837_6cf68f4a1ded44988108a2d7c3baba7d.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_off00005a8f.bin
2744e8f613fe87a533f50407e96b0187e58053d391159ac09f4f14023d843a69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8F 4952 bytes
font_01_sfnt_off00006b7e.bin
29cf946cac0df7d408df2e6ad993a3d941cb3d11968aba81ccbff498683c2c06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 15936 bytes

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