Malicious PDF — malware analysis report

Static analysis result for SHA-256 912ccd9fde9d4132…

MALICIOUS

PDF

44.0 KB Created: 2020-08-16 21:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b31ef5eee1308fd3076980f1666bc719 SHA-1: 9c7b0b79ffd685655280e2276e9347e144892aaf SHA-256: 912ccd9fde9d41322ba3c378b7836ca25523327366a603f1f3cfae72eb360805
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.com, which is known malicious infrastructure. The document body explicitly mentions 'Acronis true image 2013 trial', suggesting a lure to download or activate software. The embedded URLs, particularly the one to ttraff.com, are the primary indicators of malicious intent, likely leading to a further stage of attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=acronis+true+image+2013+trial
    • http://files.robjackson.co/uploads/1/3/2/7/132740285/7557948.pdf
    • https://cdn.shopify.com/s/files/1/0429/9689/1807/files/tadajisik.pdf
    • https://cdn.shopify.com/s/files/1/0450/9528/8984/files/katolight_generators_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/tabla_de_caracteres_ascii.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/46484643600.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/rulaxotirobisozif.pdf
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/newagazowozuvamex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bijalikupuxamimidesedol.pdf
    • https://cdn.shopify.com/s/files/1/0449/8338/6280/files/jquery_1._9._1_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2808/5911/files/chava_novel_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/1441821641.pdf
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/vexozowawov.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_off000066b3.bin
b58a490a98d9280ca3ca40edad4d5ff32497661527cf6d8a38d3fd2c6092ac1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 5596 bytes
font_01_sfnt_off000079a1.bin
c49c1b5eaf88f9b5c55a06cf46c930cac9e5f2659c75ed5fe94f0e22e1cc1adb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 13332 bytes

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