Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e1a6b96ec39b5c8…

MALICIOUS

PDF

43.8 KB Created: 2020-08-06 09:36:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64823a343be054ebe664f76a593b6b7b SHA-1: 2d0c01e1c3825eca5c160afdda4c63f1ecfcad80 SHA-256: 9e1a6b96ec39b5c8f0fb2f657b7b65a72cc409e031047d31ae4cfc1f92f19284
120 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, including a critical redirector link to `ttraff.cc`. This indicates a phishing or malicious redirection attempt, likely to deliver a secondary payload or lead the user to a fraudulent site. The document body text is heavily obfuscated and contains the primary malicious URL, suggesting an attempt to disguise the malicious intent. No scripts were extracted from this sample.

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=spelling+bee+rules+pdf
    • http://files.strive4business.co.uk/uploads/1/3/1/4/131437563/473a858fe98.pdf
    • http://files.dralisonpt.com/uploads/1/3/1/3/131398473/c31d28.pdf
    • http://files.mitercontracting.com/uploads/1/3/1/1/131163635/pipopinenete-komisupivug.pdf
    • http://jesosiji.shine-bright-centre.co.nz/uploads/1/3/1/0/131070722/cc2420.pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/63268046054.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3733/files/nelodep.pdf
    • https://cdn.shopify.com/s/files/1/0435/2478/4292/files/ansys_14._5_apdl_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/bosibe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.pdf
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/nozutanezukakaroji.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/lemikuwufusomufoles.pdf
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/viguzuviridimofekopasur.pdf
    • https://cdn.shopify.com/s/files/1/0434/1553/5774/files/dararuforeranemudijigori.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/15614126719.pdf
    • https://cdn.shopify.com/s/files/1/0436/2538/2051/files/perbedaan_akuntansi_syariah_dan_akuntansi_konvensional.pdf
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/bivape.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_off00006da5.bin
2adc28c70746179c0b5a7da3047dd0c39e283ed5e9d141c0585e0c960b44b8cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA5 5244 bytes
font_01_sfnt_off00007f80.bin
3b4b80f297f548b3c0dc270c182e9c340ddbfd225294b5c37ee5494c16492cd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F80 10292 bytes

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