Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa480c6cefb8997…

MALICIOUS

PDF

47.0 KB Created: 2020-08-07 22:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a7f36a92dfc9e8e14439dae8348fb5b SHA-1: f77cc525b6e200081c87bee80a9abe07ac31b400 SHA-256: 1aa480c6cefb89973473b1458d81d4ef850cd719c05403c294f5b76060876643
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=bruchrechnung+klasse+6+aufgaben+pdf'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. The document also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The embedded URL in the document body also points to the malicious redirector.

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/pify?keyword=bruchrechnung+klasse+6+aufgaben+pdf
    • http://files.aboriginalmedicalassociation.com/uploads/1/3/2/6/132695465/lezixilojina-fufokopamodu.pdf
    • http://files.yangmian.net/uploads/1/3/1/4/131453615/dedix.pdf
    • http://files.austinsbrandingiron.com/uploads/1/3/0/7/130775228/mosumaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/6700/5333/files/47183916046.pdf
    • https://cdn.shopify.com/s/files/1/0430/3156/0354/files/69036079683.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/31980930351.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/mergers_and_acquisitions_valuation_methods.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/88938431953.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/download_sql_server_management_studio.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/48533111306.pdf
    • https://cdn.shopify.com/s/files/1/0435/5325/9679/files/85904304299.pdf
    • https://cdn.shopify.com/s/files/1/0437/2008/1563/files/bhagavad_gita_swami_mukundananda.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/sekibilige.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/31502561943.pdf
    • https://cdn.shopify.com/s/files/1/0433/9299/1399/files/40868271598.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29529942485.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_off000060bd.bin
ab8a11f77071e77324dd60a16de5440b305e300af3e801a9e1dd01275c3e1ff7
pdf-font-stream PDF embedded font (sfnt) at offset 0x60BD 5824 bytes
font_01_sfnt_off00007483.bin
ba714b727dbd12ae9424eee615728c019378d0220f281e4de706b706f7c0456d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7483 10724 bytes
font_02_sfnt_off00009828.bin
a0532d1212509dae036733b1fb6f303b0d7fd7a209d3928fdad713008da19d30
pdf-font-stream PDF embedded font (sfnt) at offset 0x9828 16144 bytes