Malicious PDF — malware analysis report

Static analysis result for SHA-256 07144d84c6775a4e…

MALICIOUS

PDF

35.9 KB Created: 2020-08-12 01:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 298093d6eac8b01b817f8fa63f970e8b SHA-1: e2a28410bc85405a0f2c6aabcd73ffba42c2f954 SHA-256: 07144d84c6775a4eddbc5ad605955f5f017e8a98df90a6021a7767e224c57cdd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains. One of the primary links, 'https://ttraff.com/pify?keyword=little+golden+book+baby+s+day+out+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=little+golden+book+baby+s+day+out+pdf
    • http://vojowaki.silverstreamfalls.co.nz/uploads/1/3/0/8/130874633/luxixatura.pdf
    • http://kubul.paphos-dog-training.com/uploads/1/3/0/7/130738970/fd745d.pdf
    • http://files.overseasbases.net/uploads/1/3/0/7/130739180/tevadafef_zoguzal.pdf
    • http://files.razorpedia.com/uploads/1/3/0/7/130776230/bc6074dafadc77.pdf
    • http://wafofu.libertytorch.org/uploads/1/3/1/6/131637136/nivupaboxefefu-kababobiwamo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/67801040907.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdf
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/tafalafufinatesexop.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/too_much_tnt_mod_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/20550729590.pdf
    • https://cdn.shopify.com/s/files/1/0434/6164/0352/files/malazafevuvexam.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/stardew_valley_crops_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3224/8469/files/addition_and_subtraction_worksheets_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0434/2562/8316/files/biology_o_level_revision_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8272/files/wanakipogawumumipis.pdf
    • https://cdn.shopify.com/s/files/1/0437/6759/5165/files/les_diffrents_types_d_nergies_renouvelables.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e2c.bin
1cb0315ebe97f5069dcef6429d30065cebb872edab18f47709b0463e390be68a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E2C 5360 bytes
font_01_sfnt_off00006089.bin
45c49c34cf80a3145bf9ff5935a2cda3f939d43b9755ae89d2fa7a7bc8c1bda3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6089 9908 bytes

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