Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12c87480b2f358c…

MALICIOUS

PDF

56.1 KB Created: 2020-08-25 03:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb408592dda8388cf8051a984114a740 SHA-1: 2711847987809e18d8230dea0db704ae839ae6d0 SHA-256: e12c87480b2f358c009a6efc391007362c9f013bd0be0d6e8c5fa8c9916364e9
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=biblia+de+estudio+el+diario+vivir+pdf', which is a known malicious redirector. This indicates the document's primary purpose is to lure users to malicious infrastructure. 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.ru/pify?keyword=biblia+de+estudio+el+diario+vivir+pdf
    • http://files.winningtimefarm.com/uploads/1/3/1/3/131378990/9010879.pdf
    • http://files.nerodue.com/uploads/1/3/0/7/130776728/ginax_zixekozotepi_pirasoka_wizoziwopavu.pdf
    • http://fezezogim.cambridgesupervisiontraining.org/uploads/1/3/2/6/132681337/divef.pdf
    • http://files.gregoiremazars-folio.com/uploads/1/3/1/8/131856160/jorabizaxobu_xukokufesar_virunek_fudet.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/difimu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/32108886007.pdf
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/83427639964.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/99647298483.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/gitexowineravemad.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/jesalon.pdf
    • https://cdn.shopify.com/s/files/1/0459/7225/8983/files/character_sheet_app_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/giwinezarire.pdf
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/kurepaxevav.pdf
    • https://cdn.shopify.com/s/files/1/0433/5989/5717/files/avast_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23083433767.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e5d.bin
4854ff18c958b3b80091e7837e9cef485bd5b902a92ba6c3b8af00a289f9eebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5D 5060 bytes
font_01_sfnt_off00006f99.bin
fd8135f2878daa217c081b1c1eab8a02243f5322463d0279eb94a41b3d7c7287		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F99 5644 bytes
font_02_sfnt_off000083f0.bin
f74124e9d152d09678e4b6f9d23856b40eadb79834874f8df167ddf599f96ae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F0 12084 bytes
font_03_sfnt_off0000ab09.bin
1dd2025c49f35db5d8a17ef2d35403f1077e832e24293366ee41c95be44493dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB09 17100 bytes
font_04_sfnt_off0000c2e5.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E5 4324 bytes

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