Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f61689f362d0ad…

MALICIOUS

PDF

47.5 KB Created: 2020-07-30 14:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48c82908d9996d7749a20b62afac6522 SHA-1: 108af186e2abcf2aa3ad7b7da73383d59bfafe62 SHA-256: 43f61689f362d0ad308306ba9948b26eca196ab122396caf8822884176559dec
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Another critical heuristic, PDF_SEO_LINK_FARM, highlights the mass generation of external PDF links, suggesting a tactic to improve search engine ranking for malicious content. The document body, though heavily obfuscated, contains text related to 'Biblia de jerusalen pdf 1967', likely a lure.

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.com/pify?keyword=biblia+de+jerusalen+pdf+1967
    • http://files.learningforlittlepeoplepreschool.com/uploads/1/3/1/4/131453950/92198.pdf
    • http://files.drlaurakauffman.com/uploads/1/3/2/6/132683165/fazajikilariv-durawu.pdf
    • http://files.georgiarowswell.com/uploads/1/3/1/1/131164052/1f818e.pdf
    • https://cdn.shopify.com/s/files/1/0428/6359/1583/files/zerev.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/soruxavevumojijur.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/90306800215.pdf
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/4684462679.pdf
    • https://cdn.shopify.com/s/files/1/0437/0549/9803/files/8850882790.pdf
    • https://cdn.shopify.com/s/files/1/0437/0667/9447/files/52103043381.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/17362975573.pdf
    • https://cdn.shopify.com/s/files/1/0428/6893/2767/files/38246691835.pdf
    • https://cdn.shopify.com/s/files/1/0430/7124/2389/files/mozak.pdf
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/94289768408.pdf
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/zanetobafizemugapeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/7198/7098/files/776949921.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cbf.bin
fc105bc2d4a601f92589c7ab8c32fcebece836cac7fb821d5b7885418c08f9c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBF 5436 bytes
font_01_sfnt_off00007f32.bin
17f9a2a1e1d19a7f82f2be5d890002f76a1992ef943615531b54ed789a5f0f1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F32 4380 bytes
font_02_sfnt_off00008b44.bin
f09011ae23dc135c3e5e76b1622a1dbd019d2471130bb3ed5ac77149a88e3d22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B44 10932 bytes

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