Malicious PDF — malware analysis report

Static analysis result for SHA-256 92906172895059ba…

MALICIOUS

PDF

32.3 KB Created: 2020-08-20 04:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ce184170754834bbc03ecfb4a2252e9 SHA-1: c661063e1373d2242af3f1d0e095285195935147 SHA-256: 92906172895059ba5093b43b694caa2707955f541e35c84e741e7771a361409e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the URLs, 'https://ttraff.cc/pify?keyword=lens+flare+png+pack', is identified as a known malicious redirector. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, but the primary malicious activity appears to be the link farm.

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=lens+flare+png+pack
    • http://files.serendipitygv.com/uploads/1/3/1/1/131164132/pibamuzobateg_makeguseteguzo_puvamujuvabeti_fejenedivake.pdf
    • http://mukup.deergodnyc.com/uploads/1/3/0/8/130874655/vosoli.pdf
    • http://files.nickdellis.com/uploads/1/3/0/9/130969735/75d7eff862836be.pdf
    • https://cdn.shopify.com/s/files/1/0437/4872/0789/files/converse_platform_sneakers_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mubexuv.pdf
    • https://cdn.shopify.com/s/files/1/0440/9327/6312/files/mikokatajarivipeb.pdf
    • https://cdn.shopify.com/s/files/1/0449/6785/4248/files/alvin_and_the_chipmunks_cartoon_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0431/9268/0611/files/pawulupavidopobo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4257/8332/files/sharah_qasida_burda.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/69371794132.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/jedi_knight_2_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/18585072798.pdf
    • https://cdn.shopify.com/s/files/1/0433/8722/4213/files/mulonaraxusavirub.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/mugosexanusakotiwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6594/1922/files/33970254137.pdf
    • https://cdn.shopify.com/s/files/1/0432/1129/2829/files/aristotle_poetics_notes.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_off000044a9.bin
7022003dd788fda8d30f9d9771187ab881217c9e9c180c24745cd5d2ab26b1e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44A9 5188 bytes
font_01_sfnt_off00005666.bin
65a44cecc8bf7c9057b7f79f2f0ad7af969b5670bfc1f32b38f307e5f062dc40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5666 8940 bytes

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