Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea71ba3ff313bf3b…

MALICIOUS

PDF

45.9 KB Created: 2020-07-11 11:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8726df482ae229ca63f720acb09bc2c5 SHA-1: ea5e760452cc6a89fa0c76b17fbf7b8315b495a9 SHA-256: ea71ba3ff313bf3bda475e10150662bc406512801821d4fa119d2b2b2da0b13a
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.com' and a large number of links to external PDFs, indicating a link farm for SEO poisoning or redirection. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=lenovo+t450+specs', suggesting a lure to download further content or redirect to a malicious site. The presence of multiple PDF links points towards a delivery mechanism designed to distribute malicious content.

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=lenovo+t450+specs
    • http://files.r-u-ntrtnd.com/uploads/1/3/1/4/131413905/sibesadega.pdf
    • http://files.uiclbaseball.com/uploads/1/3/2/6/132681026/1519264.pdf
    • http://files.brandcofire.com/uploads/1/3/0/8/130813923/7718525.pdf
    • http://files.wirraparinga.com/uploads/1/3/0/9/130969645/57ff9ab25e6a.pdf
    • http://files.neckerscompany.com/uploads/1/3/2/6/132681356/duxaga.pdf
    • http://files.norwichstudentlettings.co.uk/uploads/1/3/1/1/131163640/zazisomezisus.pdf
    • https://xeronavuxoj.files.wordpress.com/2020/06/93549419291.pdf
    • https://dafutinak.files.wordpress.com/2020/07/48821492516.pdf
    • https://wofepedifidi.files.wordpress.com/2020/06/wigazevapuge.pdf
    • https://retisabu.files.wordpress.com/2020/06/67677656439.pdf
    • https://magapabiv.files.wordpress.com/2020/07/24253232417.pdf
    • https://voduvixuzo.files.wordpress.com/2020/07/wubapekuvujopawefibe.pdf
    • https://wubibanepide678386573.files.wordpress.com/2020/06/zapevuxefanevojenes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/5256429464.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/digalikerewuxajevukadud.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/81781843836.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.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_off00005864.bin
f4340c462329805a65af28be0f0180bae9e621b6a0b8213988e246a993b44e83
pdf-font-stream PDF embedded font (sfnt) at offset 0x5864 4684 bytes
font_01_sfnt_off00006872.bin
f1469f1a4bfa9f1b78ae13ad7c9a29d695e64539c8ac1f4a90b70cd26b79035d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6872 14440 bytes
font_02_sfnt_off0000957e.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x957E 16164 bytes