Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7336652b1cdaea…

MALICIOUS

PDF

100.5 KB Created: 2020-08-13 23:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c95ee407d6010d458fbe153494fc54c0 SHA-1: 9667871e733f27174f5be569067ea3882728df91 SHA-256: fe7336652b1cdaea150b8b688312d606295d5243bf4faf81e28267f2c023da37
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to lure users to a malicious site. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=discrete+wavelet+transform+algorithm+python', which is flagged as a malicious redirector. Additionally, it contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt to distribute malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=discrete+wavelet+transform+algorithm+python
    • http://files.feijoasarefabulous.com/uploads/1/3/2/8/132815181/8516196.pdf
    • http://files.dkbguam.com/uploads/1/3/1/4/131452944/ziwuvidafazutova.pdf
    • http://files.outmiami.org/uploads/1/3/0/7/130775704/pegekulovesutep.pdf
    • http://nifaz.southeastcleanandcare.com/uploads/1/3/1/6/131637036/xiraxaxovijemeve.pdf
    • https://cdn.shopify.com/s/files/1/0440/2089/1798/files/fugutamadebijakexevon.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/37149445145.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/nobumexomomexevilebenow.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/28407286978.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/voxik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdf
    • https://cdn.shopify.com/s/files/1/0440/4848/2454/files/fizupokomugew.pdf
    • https://cdn.shopify.com/s/files/1/0428/5582/5567/files/fekobanebozeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/2840696104.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/musavutuzisavopilifani.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxumadebamapetutorobegew.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_off0001285b.bin
a221c0b0f889c6a05a57fef894e6d061c46a8638e7897b1df68c7af4339043ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1285B 5468 bytes
font_01_sfnt_off00013ad5.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AD5 1800 bytes
font_02_sfnt_off00014362.bin
d51cb0900b795dc33511f9311b0bd1b3910778c9d72c795677117dd296bf7141		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14362 16436 bytes
font_03_sfnt_off0001764a.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1764A 4324 bytes

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