Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb2d96997e8a2738…

MALICIOUS

PDF

32.6 KB Created: 2020-08-20 13:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b979a43bb55b50a3c724ba0d80ea82c9 SHA-1: 58e0bb905b44a488385bc1ef9471e21bff2be376 SHA-256: bb2d96997e8a2738b8fd769fc9d4317b432905a883dabf59ba8a08f3fa79dfd8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the text 'Blitzing biology year 12 pdf' and the malicious URL, suggesting a lure to download or view educational material. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.com/pify?keyword=blitzing+biology+year+12+pdf
    • http://files.msmillyard.com/uploads/1/3/1/1/131164479/jasolugoza.pdf
    • http://files.supercontinent-bp.com/uploads/1/3/1/8/131872281/6195577.pdf
    • http://files.naturalandpermanentbodyadornment.com/uploads/1/3/1/3/131383247/wexoxa_tadananodanav.pdf
    • http://files.legacycaengineering.com/uploads/1/3/1/3/131398360/fazojejikife.pdf
    • http://files.watervlietpubliclibrary.org/uploads/1/3/1/3/131381021/1659827.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/51607536579.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/module_7_test_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/26024010956.pdf
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/24215707692.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/11019740086.pdf
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/xefemuzaxefidotazobalarez.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/wejitalurorimemeloverowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3682/6007/files/51322790032.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6326/files/40767552143.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/visalu.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_off00004377.bin
a093dc52d4826d454a85073c26e2fa8c3e8e56d9eb8e0ee482c32b5380534a4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4377 5556 bytes
font_01_sfnt_off0000567f.bin
e60afabfe1d9757008b788f0e6864ec582b031f17c548b2879835deeb91b0c16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x567F 9212 bytes

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