Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba8199d7c1f4ea2…

MALICIOUS

PDF

66.2 KB Created: 2020-07-14 02:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ed9fd294b900cd446fca55bd2f95ed9 SHA-1: 855937c641727ed2522b0348ec2b7f64af1887af SHA-256: 3ba8199d7c1f4ea28172d1ad9abd917fbd7e2eb95468e4d6b29a47eebcfb404d
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, pointing to ttraff.com. Additionally, it exhibits a PDF link farm heuristic, containing numerous external links, many of which appear to be generated SEO content. The document body, though heavily obfuscated, contains text related to 'Landscape photography basics pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious redirection.

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/wb?keyword=landscape%20photography%20basics%20pdf
    • http://files.theothermanofsteel.com/uploads/1/3/1/6/131637482/norosuviduridesekobu.pdf
    • http://files.milazanenyc.com/uploads/1/3/1/4/131453715/jiludutemozijajot.pdf
    • http://files.londontoursatnight.co.uk/uploads/1/3/2/8/132815207/db307.pdf
    • http://files.animalclinicofchardon.com/uploads/1/3/1/3/131398374/sowireresibujebilix.pdf
    • http://files.demolitioninsanantonio.com/uploads/1/3/1/4/131438509/vodasofivedoxogiru.pdf
    • http://files.zip-dang.com/uploads/1/3/1/3/131383664/gadizubobowow_kufusu.pdf
    • https://zimixukegor.files.wordpress.co
    • https://gibubes.files.wordpress.com/2020/07/ruxizo.pdf
    • https://zimixukegor.files.wordpress.com/2020/06/26343331927.pdf
    • https://kitiwuxe.files.wordpress.com/2020/06/4843846773.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/juvedazogevokidabedim.pdf
    • https://cdn.shopify.com/s/files/1/0433/9325/3526/files/12003541080.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/81424199749.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/75974252411.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3435/files/jekejuwesebe.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/669420506.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/78093145287.pdf
    • https://cdn.shopify.com/s/files/1/0431/3491/0618/files/33949904069.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_off0000c554.bin
9f7475b7d97d85e7ffb969dd7ec88003a7963593a485d4d82084a180da412ca2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC554 5356 bytes
font_01_sfnt_off0000d783.bin
a935edd8e24871fcf1a421aa26d08cb7f8268baa26d13327d586cf42c390866b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD783 10552 bytes