Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2bb4bec62959c23…

MALICIOUS

PDF

40.3 KB Created: 2020-08-15 07:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b859da59bc9856365996dc8b67286cb8 SHA-1: 5fd8d80bf365727b6d21488395836ff0111cab98 SHA-256: c2bb4bec62959c23fb5cc43b48be028b8972406c45f655f746dfe167f19fe7cd
150 Risk Score

Malware Insights

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

This PDF file contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=play+store+kaise++karo'. The document body, though heavily obfuscated, contains this same URL, suggesting the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous PDF links and the redirector strongly indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=play+store+kaise++karo
    • http://files.truthfulart.com/uploads/1/3/2/6/132695995/vopanaza-xufizanaj-jatiwuxaw.pdf
    • http://tiwajaj.otterhounduniversity.com/uploads/1/3/2/7/132740720/dasam.pdf
    • http://files.nlhammondphotography.com/uploads/1/3/1/3/131383738/karifamezage-gopapife-tironuwanavi-womanoxag.pdf
    • http://files.brucekatlincreates.com/uploads/1/3/1/4/131453595/35c14b.pdf
    • http://xonona.periquetgalicia.com/uploads/1/3/2/8/132815961/8376498.pdf
    • https://cdn.shopify.com/s/files/1/0440/1076/6486/files/early_adulthood_development.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/weragi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8230/1094/files/63254764601.pdf
    • https://cdn.shopify.com/s/files/1/0430/3182/2485/files/baedeker_guides.pdf
    • https://cdn.shopify.com/s/files/1/0431/2583/3882/files/pibibikar.pdf
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/measures_of_multivariate_skewness_and_kurtosis_with_applications.pdf
    • https://cdn.shopify.com/s/files/1/0444/3065/5655/files/multiple_regression_analysis_excel_interpretation.pdf
    • https://cdn.shopify.com/s/files/1/0435/8602/7677/files/96588729038.pdf
    • https://cdn.shopify.com/s/files/1/0435/1141/4939/files/xifekobobugab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/timesaver_architecture_book_free_download.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_off00004c6c.bin
dddbf9f28f61af03987c47f98a3aed84836a1f1dad101ed3d609e157869ce6af
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C6C 4848 bytes
font_01_sfnt_off00005cfb.bin
8b2b6bb4f95fe35119391e7c3460a8af3982417767723f4d8e286beee95cd84c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFB 9864 bytes
font_02_sfnt_off00007efa.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFA 16164 bytes