Malicious PDF — malware analysis report

Static analysis result for SHA-256 8feaf9a6314640ee…

MALICIOUS

PDF

42.2 KB Created: 2020-08-11 08:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c6e2fb60353e944ec69b53ae19e9808 SHA-1: 033a6523901f66426c1125c5fd640d8cae7bf183 SHA-256: 8feaf9a6314640eee118fd891d160c238a13d8176cbdf1fcf2c42d4ccc520f39
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body text, though partially corrupted, suggests a lure related to downloading a Bible, which is a common tactic for phishing or malware delivery. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a coordinated effort to distribute malicious content. 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.cc/pify?keyword=santa+biblia+reina+valera+1960+pdf+descargar
    • http://files.collectifcontraceptionliege.com/uploads/1/3/0/7/130740013/2094605.pdf
    • http://files.bulldownproductions.com/uploads/1/3/1/3/131383333/wogivu.pdf
    • http://zafakefaw.riafg.org/uploads/1/3/0/7/130738524/3c48b3.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/baferujenuzo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/73448593063.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2481/files/88999760725.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9201/files/arabiyyah_bayna_yadayk_book_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/31688092048.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.pdf
    • https://cdn.shopify.com/s/files/1/0432/6483/5737/files/18090474244.pdf
    • https://cdn.shopify.com/s/files/1/0431/5545/6164/files/korulujavarenugo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8556/8923/files/kusezuledevaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/business_plan_writing.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/tenugetixilekilozepi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b09.bin
9bcec82eab95073aa1f1b488a6b4d01ee7d58c04f7ef4b285322c0a5d09aa1b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B09 5808 bytes
font_01_sfnt_off00005ec7.bin
2d1c02d7faeb7dad5af5d103f135926a0d4fd4e69f3a7da8959d46cf8e88466d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC7 3120 bytes
font_02_sfnt_off00006b4a.bin
394f7597cb8b7fcca9f81ebff4608212767fa1d7417748e1fb8a109c83e64bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4A 10040 bytes
font_03_sfnt_off00008d4a.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4A 4324 bytes

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