Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f2c6f4864e2bc72…

MALICIOUS

PDF

95.5 KB Created: 2020-07-28 15:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7183920a8e6797fc4b0cfec5e1126921 SHA-1: e2b384fbfb7c468d31f618a9c286153c5c35c624 SHA-256: 1f2c6f4864e2bc72a3ef1fe0417c92fb45b4f1786cad46d249a73adc0cae5154
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'nccn guidelines 2015 cml' which may be used as a lure. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly benign 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.ru/pify?keyword=nccn+guidelines+2015+cml
    • http://files.ankorsstreetcollege.com/uploads/1/3/2/7/132740375/dizibebikebebizob.pdf
    • http://files.bethbooram.org/uploads/1/3/1/4/131437493/4358940.pdf
    • http://files.rkrally.com/uploads/1/3/1/8/131856539/1414960.pdf
    • http://files.smsphonefix.com/uploads/1/3/1/6/131606208/c636cc0825a.pdf
    • http://files.tanyadann.co.nz/uploads/1/3/1/4/131406300/fopokodazupon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8412/files/95377828786.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/46140962148.pdf
    • https://cdn.shopify.com/s/files/1/0435/1046/4667/files/62142618294.pdf
    • https://cdn.shopify.com/s/files/1/0435/1790/3003/files/70979175588.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/zojelugegagadepepojovilo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/xegififofubitufedebazuxus.pdf
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/94191521907.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/jafajexunamijovu.pdf
    • https://cdn.shopify.com/s/files/1/0439/3389/2763/files/fawokefamus.pdf
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/91683647616.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.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_off0001177a.bin
fa7584fdb664b4bfbe47e1f3c0bde0d01b765e6008de76de171d81a9935f3fe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1177A 5064 bytes
font_01_sfnt_off0001289f.bin
7d7486e5555e5876df1b5521abe06b15d19315e14fd1c1b2922092bb2bb8ce45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1289F 16812 bytes
font_02_sfnt_off00015bda.bin
99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BDA 16060 bytes

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