Malicious PDF — malware analysis report

Static analysis result for SHA-256 57626d62f327c8d0…

MALICIOUS

PDF

42.6 KB Created: 2020-08-03 10:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be37f1f1a3affa231482a825f19abb7d SHA-1: adc8c06da5e1f663b4d3fe44b2dc95d08396d3f5 SHA-256: 57626d62f327c8d0842b751cd990d3e1162096071e6ca8baef76e14599f97bbd
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text referencing 'Aadhaar application form pdf format' and includes a URL pointing to a known malicious redirector. This suggests the document is designed to trick users into visiting malicious sites under the guise of providing a form.

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.cc/wb?keyword=aadhaar%20application%20form%20pdf%20format
    • http://files.hanumanyogaretreat.com/uploads/1/3/1/4/131453283/81c2aa.pdf
    • http://files.hello-baby-toys.com/uploads/1/3/1/4/131453807/4352687.pdf
    • http://files.flissyscoffeeshop.co.uk/uploads/1/3/2/6/132681796/dexevavizokuba.pdf
    • http://files.acesteamworks.com/uploads/1/3/1/0/131070374/janunale-mateze.pdf
    • http://files.dataswiz.com/uploads/1/3/1/0/131071243/filumunej.pdf
    • https://cdn.shopify.com/s/files/1/0438/0013/3793/files/como_convertir_un_archivo_java_a_ejecutable.pdf
    • https://cdn.shopify.com/s/files/1/0435/2232/6696/files/mijavi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8680/7201/files/76987253172.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/regidizetofetosum.pdf
    • https://cdn.shopify.com/s/files/1/0438/1235/6253/files/bank_statement_in_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/rofuweluloz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/botifope.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/83144297313.pdf
    • https://cdn.shopify.com/s/files/1/0440/2210/4229/files/4583777483.pdf
    • https://cdn.shopify.com/s/files/1/0430/6187/0743/files/bunewiza.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/laruritozulawoturozapu.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_off00005d65.bin
2a391a502591056742b752adb9602f40144635eda029efe81ef688bd5c4295d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D65 4876 bytes
font_01_sfnt_off00006db8.bin
2e0f3011d7a19639a7136816bdef802bc2f2e04af3d8fe9db4f846eef17a9459
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB8 9852 bytes
font_02_sfnt_off00008f74.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F74 4324 bytes