Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a34276a887a9908…

MALICIOUS

PDF

42.0 KB Created: 2020-08-15 06:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f21517395d184f9437fe521bb665745 SHA-1: ef689c1a1f28e78f221b62cf05ab353373f7b750 SHA-256: 3a34276a887a99088a92f1e236c0e8dbc677d9d8153af7db2f0441e1a5411b9e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to obscure malicious destinations and engage in SEO poisoning. One prominent link directs to a known malicious redirector, 'ttraff.ru', which is disguised as a curriculum guide. The file's structure and numerous outbound links suggest an attempt to drive traffic to potentially harmful sites.

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.ru/pify?keyword=curriculum+guide+in+science+grade+11
    • http://files.rosenortemc.ca/uploads/1/3/1/1/131163540/belixedonadamapu.pdf
    • http://files.whowardwilliams.com/uploads/1/3/1/3/131380297/69d6fe46e6176e.pdf
    • http://zetipor.kansaspoets.com/uploads/1/3/1/1/131164250/6232448.pdf
    • http://files.swiatlodesign.com/uploads/1/3/1/1/131164310/tujukikerenil_jamuzedoxed_zefiz_menuneg.pdf
    • http://pazafe.landmark-mgmt.com/uploads/1/3/1/4/131452883/2bae2c3aabd3817.pdf
    • https://cdn.shopify.com/s/files/1/0428/4294/7750/files/tomiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/zadomabegiluxawepifuli.pdf
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/saguwevofenil.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/kojakodaku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9629/4051/files/87600555055.pdf
    • https://cdn.shopify.com/s/files/1/0430/3673/7699/files/sesalijixuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/0204/3288/files/47860714323.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7700/files/gugomusaxafip.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9384/files/auto_tune_7_crack.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/61514868371.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/68610452743.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/anaconda_python_manual.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_off000065fb.bin
1618160df00a3a5032665f4b0ed2a2d55c0d121de36f5935abb634de092fa5ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FB 5216 bytes
font_01_sfnt_off0000779b.bin
b1de884ae6462478677e54cba51022a6d639351c1918980551eab4f644237795		 pdf-font-stream PDF embedded font (sfnt) at offset 0x779B 10364 bytes

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