Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac73996f3babea5…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 07:05:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 697bc7aa3d3e34513c1fec2143415d5b SHA-1: 2c965578ae9a2385ecb149140766238c48f158a6 SHA-256: 9ac73996f3babea5bc2594818d162da296ddf9e07d7f6df464353c9e139e1e37
120 Risk Score

Malware Insights

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

The PDF contains a link farm with 17 external links, many pointing to Shopify domains, designed to appear as legitimate resources. One of these links, 'https://ttraff.ru/wb?keyword=techniques%20for%20improving%20listening%20skills%20pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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/wb?keyword=techniques%20for%20improving%20listening%20skills%20pdf
    • http://files.mrsmurphysmusic.com/uploads/1/3/0/7/130776503/fufinilobesur-xeregojilaputi-mofilemaram.pdf
    • http://fulil.sealionspeech.com/uploads/1/3/2/3/132302894/21f90e.pdf
    • http://files.fresnochili.com/uploads/1/3/0/7/130740175/wedum_lekanegonab_vimabe_zuxixizefi.pdf
    • http://wolegeko.nicolebando.com/uploads/1/3/0/7/130776485/2936455.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4756/files/acdisplay_apk_pure.pdf
    • https://cdn.shopify.com/s/files/1/0439/9346/4990/files/tinker_s_construct_materials.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/71313795113.pdf
    • https://cdn.shopify.com/s/files/1/0432/3174/0071/files/starbucks_coffee_grinder.pdf
    • https://cdn.shopify.com/s/files/1/0431/4693/6482/files/robureziwobe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/97273103277.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/kadambari_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/64597961671.pdf
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/mezadelapekusawepexof.pdf
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/14476876251.pdf
    • https://cdn.shopify.com/s/files/1/0438/0521/2832/files/journal_of_physics_conference_series_latex_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/xazopuxoj.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_off000067d9.bin
7264073a69bbbbfd2ee48a0d59964683eb8e1ee16f057a24b3dfb78b98ff69ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x67D9 5556 bytes
font_01_sfnt_off00007a9a.bin
2b30e91e3dbfa21996683514ec24f43645167ff00441ae64299dd9dba01073cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9A 10236 bytes