Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dff3dc692cf1563…

MALICIOUS

PDF

70.1 KB Created: 2020-08-14 05:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89aaa929e74d43373b2d1f6f9c3f978b SHA-1: f9374f1cb99b54ba8393441224f4e3b41b1e7eb5 SHA-256: 3dff3dc692cf1563fec1a189e5062851f95f0c0132f84f82b3c0947943607dbe
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, specifically pointing to 'https://ttraff.cc/wb?keyword=educational%20philosophy%20of%20swami%20vivekananda%20pdf'. This indicates a phishing or social engineering attempt to direct the user to a malicious site. The document body, though heavily obfuscated, also contains the same URL, reinforcing the malicious intent. The presence of a link farm heuristic further suggests this PDF is part of a larger campaign to distribute malicious links.

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=educational%20philosophy%20of%20swami%20vivekananda%20pdf
    • http://files.frockshouse.com/uploads/1/3/1/4/131438442/8471960.pdf
    • http://files.saverosselevator.com/uploads/1/3/1/3/131383998/2025724.pdf
    • http://rumof.brokenbarrelhardcider.com/uploads/1/3/0/7/130775680/xobomatafux-dulabupudugaz-duveveroxaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9663/6580/files/pusivukomagabozo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7815/files/77286495145.pdf
    • https://cdn.shopify.com/s/files/1/0428/3006/9927/files/35384391030.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/nafapuziwefumax.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/67006646939.pdf
    • https://cdn.shopify.com/s/files/1/0430/5338/3833/files/55614239101.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/51690948188.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4629/files/65090462830.pdf
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/anthropometric_measurements_for_adults.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jatud.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/kejabeguxitefegebafut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/53619544901.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_off0000b817.bin
0f58f857c96164e2b1762a5b52fed36454a8c3beeb93b6a06ed103d63b7f419c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB817 5572 bytes
font_01_sfnt_off0000cb05.bin
762ae3ff4946ef6b3454233e89876ec576bb295a613509f9246c45c89854f812
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB05 10156 bytes
font_02_sfnt_off0000ede7.bin
e19f90fe2c78dc3eb5d9e83a3f9c59755b3a275e73432fdb8d159454f4b8b8d6
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE7 8852 bytes