Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2b53e3b73c6a2c…

MALICIOUS

PDF

53.4 KB Created: 2020-08-10 17:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c9b1f1f2344801b91cea7ffb9d00437 SHA-1: af8c669c4f78a40f1f4b0a2680d8429186a0b2cb SHA-256: eb2b53e3b73c6a2c510bf9f01595093fdae852d0d6dc001531fff5632121450c
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that are part of a link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for "banking and finance law notes pdf", and the malicious URL is directly associated with this keyword. The primary attack vector is likely social engineering via a malicious link within the PDF.

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=banking+and+finance+law+notes+pdf
    • http://files.irishdancinglosangeles.com/uploads/1/3/1/3/131380842/ditutoxog.pdf
    • http://milil.kiwiprofesor.com/uploads/1/3/2/8/132814930/wonikebugu-velifojenibad.pdf
    • http://files.gowildjuicery.com/uploads/1/3/1/8/131857152/cf345.pdf
    • https://cdn.shopify.com/s/files/1/0438/3057/5266/files/67293222551.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/act_aspire_reading_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/4713/3088/files/naserobuvumisane.pdf
    • https://cdn.shopify.com/s/files/1/0438/3899/6642/files/511152807.pdf
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/genestealer_cult_codex_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/3120/5787/files/occupational_therapy_in_acute_care_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/89226770307.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/rogipatokopufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/49521035699.pdf
    • https://cdn.shopify.com/s/files/1/0437/8171/8167/files/31856493271.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_off000091c5.bin
afd3be6b9443c98240a5b0346ed3bdb326946f0c613fc1699e151e92fb2481f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91C5 5432 bytes
font_01_sfnt_off0000a46c.bin
0df1b8039b4162df89604101809a4a1d7243f1d2e671f3ec770c8bd5ae379cce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA46C 10644 bytes

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