Malicious PDF — malware analysis report

Static analysis result for SHA-256 6587c0d5f2d86ec1…

MALICIOUS

PDF

228.3 KB Created: 2020-08-13 21:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1ec0f00de45995aaa7009eaa9653429 SHA-1: de9413525a8e19c9349e6d9515f4525868f1ebba SHA-256: 6587c0d5f2d86ec14436fd05b37afb75e814c6226247ed434561b90b938a7d3b
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://ttraff.ru/pify?keyword=vasant+panchami+pic+free'. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.ru/pify?keyword=vasant+panchami+pic+free
    • http://files.balancedespitethechaos.com/uploads/1/3/0/7/130739028/mefasi-wubuzetatilital-vubik.pdf
    • http://files.aya-technologies.com/uploads/1/3/1/6/131636930/5df3cd921.pdf
    • http://files.lisasearsart.com/uploads/1/3/1/4/131438641/4931054.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0440/8823/0053/files/nomadetiputovidomobag.pdf
    • https://cdn.shopify.com/s/files/1/0440/7492/6230/files/lenutatabuxuka.pdf
    • https://cdn.shopify.com/s/files/1/0429/2375/3635/files/85056220067.pdf
    • https://cdn.shopify.com/s/files/1/0440/4881/0149/files/mejoka.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7091/files/zojajemumurevegivumer.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/14636660658.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/8264169780.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/bikini_body_guide_training.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/75113338142.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/tazala.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/82568330820.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/geranezi.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_off00034cc3.bin
feacfb55ada04bc218d9a1e885e02a55f36f544078c2dc98e309fb7232de717a
pdf-font-stream PDF embedded font (sfnt) at offset 0x34CC3 5188 bytes
font_01_sfnt_off00035e39.bin
dfa8d889f6c8f7b9623343deffac1a0e310cf387f1234d688d246c4b12727939
pdf-font-stream PDF embedded font (sfnt) at offset 0x35E39 11032 bytes